Indeed there is.
chmod a+x
is relative to the current state and just sets the x
flag. So a 640 file becomes 751 (or 750?), a 644 file becomes 755.
chmod 755
, however, sets the mask as written: rwxr-xr-x
, no matter how it was before. It is equivalent to chmod u=rwx,go=rx
.
2 month old thread, but better late than never! On 10.6, I have my webserver documents folder set to:
owner:root
group:_www
permission:755
_www is the user that runs apache under Mac OS X. I then added an ACL to allow full permissions to the Administrators group. That way, I can still make any changes with my admin user without having to authenticate as root. Also, when I want to allow the webserver to write to a folder, I can simply chmod to 775, leaving everyone other than root:_www with only read/execute permissions (excluding any ACLs that I have applied)
Adding executable permissions, recursively, to all files (not folders) within the current folder with sh
extension:
find . -name '*.sh' -type f | xargs chmod +x
* Notice the pipe (|
)
0755
= User:rwx
Group:r-x
World:r-x
0750
= User:rwx
Group:r-x
World:---
(i.e. World: no access)
r = read
w = write
x = execute (traverse for directories)
Just a note for anyone who stumbles upon this:
If you are trying to SSH with a key that has been shared with you, for example:
ssh -i /path/to/keyfile.pem user@some-host
Where keyfile.pem
is the private/public key shared with you and you're using it to connect, make sure you save it into ~/.ssh/
and chmod 777
.
Trying to use the file when it was saved elsewhere on my machine was giving the OP's error. Not sure if it is directly related.
If you have desired permissions saved to string then do
s = '660'
os.chmod(file_path, int(s, base=8))
chmod does not allow you to set ownership of a file. To set the ownership of the file you must use the chown command.
You just need to manually set the desired permissions with chmod()
:
private function writeFileContent($file, $content){
$fp = fopen($file, 'w');
fwrite($fp, $content);
fclose($fp);
// Set perms with chmod()
chmod($file, 0777);
return true;
}
You might want to consider this answer given by nik on superuser and use "one chmod" for all files/folders like this:
chmod 755 $(find /path/to/base/dir -type d)
chmod 644 $(find /path/to/base/dir -type f)
Do both in a single pass with:
find -type f ... -o -type d ...
As in, find type f OR type d, and do the first ... for files and the second ... for dirs. Specifically:
find -type f -exec chmod --changes 644 {} + -o -type d -exec chmod --changes 755 {} +
Leave off the --changes
if you want it to work silently.
I think the below rules are recommended for a default wordpress site:
For folders inside wp-content, set 0755 permissions:
chmod -R 0755 plugins
chmod -R 0755 uploads
chmod -R 0755 upgrade
Let apache user be the owner for the above directories of wp-content:
chown apache uploads
chown apache upgrade
chown apache plugins
I think the problem you're running into is that, even though you can set your own umask values in the system, this does not allow you to explicitly control the default permissions set on a new file by gedit (or whatever editor you use).
I believe this detail is hard-coded into gedit and most other editors. Your options for changing it are (a) hacking up your own mod of gedit or (b) finding a text editor that allows you to set a preference for default permissions on new files. (Sorry, I know of none.)
In light of this, it's really not so bad to have to chmod your files, right?
Piping to xargs is a dirty way of doing that which can be done inside of find.
find . -type d -exec chmod 0755 {} \;
find . -type f -exec chmod 0644 {} \;
You can be even more controlling with other options, such as:
find . -type d -user harry -exec chown daisy {} \;
You can do some very cool things with find and you can do some very dangerous things too. Have a look at "man find", it's long but is worth a quick read. And, as always remember:
This is a tricky question.
There a set of problems about file permissions. If you can do this at the command line
$ sudo chown myaccount /path/to/file
then you have a standard permissions problem. Make sure you own the file and have permission to modify the directory.
If you cannnot get permissions, then you have probably mounted a FAT-32 filesystem. If you ls -l
the file, and you find it is owned by root and a member of the "plugdev" group, then you are certain its the issue. FAT-32 permissions are set at the time of mounting, using the line of /etc/fstab file. You can set the uid/gid of all the files like this:
UUID=C14C-CE25 /big vfat utf8,umask=007,uid=1000,gid=1000 0 1
Also, note that the FAT-32 won't take symbolic links.
Wrote the whole thing up at http://www.charlesmerriam.com/blog/2009/12/operation-not-permitted-and-the-fat-32-system/
If you want to set filemode to false in config files recursively (including submodules) :
find -name config | xargs sed -i -e 's/filemode = true/filemode = false/'
you can use following command to create directory and give permissions at the same time
mkdir -m777 path/foldername
Use chown
to change ownership and chmod
to change rights.
use the -R
option to apply the rights for all files inside of a directory too.
Note that both these commands just work for directories too. The -R
option makes them also change the permissions for all files and directories inside of the directory.
For example
sudo chown -R username:group directory
will change ownership (both user and group) of all files and directories inside of directory and directory itself.
sudo chown username:group directory
will only change the permission of the folder directory but will leave the files and folders inside the directory alone.
you need to use sudo to change the ownership from root to yourself.
Edit:
Note that if you use chown user: file
(Note the left-out group), it will use the default group for that user.
Also You can change the group ownership of a file or directory with the command:
chgrp group_name file/directory_name
You must be a member of the group to which you are changing ownership to.
You can find group of file as follows
# ls -l file
-rw-r--r-- 1 root family 0 2012-05-22 20:03 file
# chown sujit:friends file
User 500 is just a normal user. Typically user 500 was the first user on the system, recent changes (to /etc/login.defs) has altered the minimum user id to 1000 in many distributions, so typically 1000 is now the first (non root) user.
What you may be seeing is a system which has been upgraded from the old state to the new state and still has some processes knocking about on uid 500. You can likely change it by first checking if your distro should indeed now use 1000, and if so alter the login.defs file yourself, the renumber the user account in /etc/passwd and chown/chgrp all their files, usually in /home/, then reboot.
But in answer to your question, no, you should not really be worried about this in all likelihood. It'll be showing as "500" instead of a username because o user in /etc/passwd has a uid set of 500, that's all.
Also you can show your current numbers using id i'm willing to bet it comes back as 1000 for you.
Yes, very right that the -R
option in chmod
command makes the files/sub-directories under the given directory will get 777 permission. But generally, it's not a good practice to give 777 to all files and dirs as it can lead to data insecurity. Try to be very specific on giving all rights to all files and directories. And to answer your question:
chmod -R 777 your_directory_name
... will work
your question is basically O/RM's vs hand writing SQL
Take a look at some of the other O/RM solutions out there, L2S isn't the only one (NHibernate, ActiveRecord)
http://en.wikipedia.org/wiki/List_of_object-relational_mapping_software
to address the specific questions:
I struggled with the same problem for a while just now (using Mac). Here is what I did and it finally worked:
(1) Confirm the .ssh directory exists:
#show all files including hidden
ls -a
(2) Accept all default values by just pressing enter at the prompt
Enter file in which to save the key (/Users/username/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
You should get a message :
Your identification has been saved in /Users/username/.ssh/id_rsa.
Your public key has been saved in /Users/username/.ssh/id_rsa.pub.
The key fingerprint is:
BZA156:HVhsjsdhfdkjfdfhdX+BundfOytLezXvbx831/s [email protected]
The key's randomart image is:XXXXX
PS If you are configuring git for rails, do the following (source):
git config --global color.ui true
git config --global user.name "yourusername"
git config --global user.email "[email protected]"
ssh-keygen -t rsa -C "[email protected]"
(then accept all defaults by pressing enter)
The primary flag seems to only work for vagrant ssh
for me.
In the past I have used the following method to hack around the issue.
# stage box intended for configuration closely matching production if ARGV[1] == 'stage' config.vm.define "stage" do |stage| box_setup stage, \ "10.9.8.31", "deploy/playbook_full_stack.yml", "deploy/hosts/vagrant_stage.yml" end end
Other than John's answer, you could also make one of the variable float, and the result will yield float.
>>> 144 / 314.0
0.4585987261146497
To plot just a selection of your columns you can select the columns of interest by passing a list to the subscript operator:
ax = df[['V1','V2']].plot(kind='bar', title ="V comp", figsize=(15, 10), legend=True, fontsize=12)
What you tried was df['V1','V2']
this will raise a KeyError
as correctly no column exists with that label, although it looks funny at first you have to consider that your are passing a list hence the double square brackets [[]]
.
import matplotlib.pyplot as plt
ax = df[['V1','V2']].plot(kind='bar', title ="V comp", figsize=(15, 10), legend=True, fontsize=12)
ax.set_xlabel("Hour", fontsize=12)
ax.set_ylabel("V", fontsize=12)
plt.show()
In case you want to do it using Python: check Is it possible in python to kill process that is listening on specific port, for example 8080?
The answer from Smunk works nicely. I repeat his code here:
from psutil import process_iter
from signal import SIGTERM # or SIGKILL
for proc in process_iter():
for conns in proc.connections(kind='inet'):
if conns.laddr.port == 8080:
proc.send_signal(SIGTERM) # or SIGKILL
continue
I was having this exact same problem and the solution turned out to be pretty easy for me. Basically change your code to the following and it should work. NOTE: the return before gulp.src made all the difference for me.
gulp.task "coffee", ->
return gulp.src("src/server/**/*.coffee")
.pipe(coffee {bare: true}).on("error",gutil.log)
.pipe(gulp.dest "bin")
gulp.task "clean",->
return gulp.src("bin", {read:false})
.pipe clean
force:true
gulp.task 'develop',['clean','coffee'], ->
console.log "run something else"
You can always, reshape like:
temp = [1,2,3,4,5,5,6,7]
temp = temp.reshape(len(temp), 1)
Because, the major issue is when your, temp.shape is: (8,)
and you need (8,1)
another important point is that Random.nextInt(n) is repeatable since you can create two Random object with the same seed. This is not possible with Math.random().
Use json
in dataType
and send like this:
$.ajax({
url: "your url which return json",
type: "POST",
crossDomain: true,
data: data,
dataType: "json",
success:function(result){
alert(JSON.stringify(result));
},
error:function(xhr,status,error){
alert(status);
}
});
and put this lines in your server side file:
if PHP:
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST');
header('Access-Control-Max-Age: 1000');
if java:
response.addHeader( "Access-Control-Allow-Origin", "*" );
response.addHeader( "Access-Control-Allow-Methods", "POST" );
response.addHeader( "Access-Control-Max-Age", "1000" );
If your example represents your real code, the problem is not in the push
, it's that your constructor doesn't do anything.
You need to declare and initialize the x
and y
members.
Explicitly:
export class Pixel {
public x: number;
public y: number;
constructor(x: number, y: number) {
this.x = x;
this.y = y;
}
}
Or implicitly:
export class Pixel {
constructor(public x: number, public y: number) {}
}
You should be able to use something similar to:
$('#selectElementId').change(
function(){
$(this).closest('form').trigger('submit');
/* or:
$('#formElementId').trigger('submit');
or:
$('#formElementId').submit();
*/
});
Have you tried using:
(status,output) = commands.getstatusoutput("ps aux")
I thought this had fixed the exact same problem for me. But then my process ended up getting killed instead of failing to spawn, which is even worse..
After some testing I found that this only occurred on older versions of python: it happens with 2.6.5 but not with 2.7.2
My search had led me here python-close_fds-issue, but unsetting closed_fds had not solved the issue. It is still well worth a read.
I found that python was leaking file descriptors by just keeping an eye on it:
watch "ls /proc/$PYTHONPID/fd | wc -l"
Like you, I do want to capture the command's output, and I do want to avoid OOM errors... but it looks like the only way is for people to use a less buggy version of Python. Not ideal...
keep dividing by ten until you get zero, then just output the number of divisions.
int intLen(int x)
{
if(!x) return 1;
int i;
for(i=0; x!=0; ++i)
{
x /= 10;
}
return i;
}
select *
into new_table
from table_A
UNION
Select *
From table_B
This only works if Table_A and Table_B have the same schemas
This is an old thread, but I'm responding because it still appears high in the list of search results. Now that the future has arrived, you can use the :nth-child pseudo-selector.
p:nth-child(1) { color: blue; }
p.myclass1:nth-child(1) { color: red; }
p.myclass2:nth-child(1) { color: green; }
The :nth-child pseudo-selector is powerful - the parentheses accept formulas as well as numbers.
More here: https://developer.mozilla.org/en-US/docs/Web/CSS/:nth-child
Check on custom font name whether checkbox on "Target membership" is added. This should help.
Or by using DBI
s sqlRownamesToColumn
library(DBI)
sqlRownamesToColumn(df)
In C++, you can use the global function std::getline, it takes a string and a stream and an optional delimiter and reads 1 line until the delimiter specified is reached. An example:
#include <string>
#include <iostream>
#include <fstream>
int main() {
std::ifstream input("filename.txt");
std::string line;
while( std::getline( input, line ) ) {
std::cout<<line<<'\n';
}
return 0;
}
This program reads each line from a file and echos it to the console.
For C you're probably looking at using fgets
, it has been a while since I used C, meaning I'm a bit rusty, but I believe you can use this to emulate the functionality of the above C++ program like so:
#include <stdio.h>
int main() {
char line[1024];
FILE *fp = fopen("filename.txt","r");
//Checks if file is empty
if( fp == NULL ) {
return 1;
}
while( fgets(line,1024,fp) ) {
printf("%s\n",line);
}
return 0;
}
With the limitation that the line can not be longer than the maximum length of the buffer that you're reading in to.
$('#textbox').on('keypress', function (e) {
if(e.which === 13){
//Disable textbox to prevent multiple submit
$(this).attr("disabled", "disabled");
//Do Stuff, submit, etc..
//Enable the textbox again if needed.
$(this).removeAttr("disabled");
}
});
copy all meta values to a cache-object:
/* <meta name="video" content="some-video"> */
const meta = Array.from(document.querySelectorAll('meta[name]')).reduce((acc, meta) => (
Object.assign(acc, { [meta.name]: meta.content })), {});
console.log(meta.video);
If you're trying to query an Oracle database, you might want to use
select owner, table_name
from all_tab_columns
where column_name = 'ColName';
Here it is a solution using map function:
>>> a = [3, 7, 19]
>>> map(lambda x: (x, a[x]), range(len(a)))
[(0, 3), (1, 7), (2, 19)]
And a solution using list comprehensions:
>>> a = [3,7,19]
>>> [(x, a[x]) for x in range(len(a))]
[(0, 3), (1, 7), (2, 19)]
I just had this issue building react-native app when I try to install Pod. I had to export 2 variables:
export CC=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
CPP='/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -E'
I'd try something like:
#!/usr/bin/python
from __future__ import print_function
import shlex
from subprocess import Popen, PIPE
def shlep(cmd):
'''shlex split and popen
'''
parsed_cmd = shlex.split(cmd)
## if parsed_cmd[0] not in approved_commands:
## raise ValueError, "Bad User! No output for you!"
proc = Popen(parsed_command, stdout=PIPE, stderr=PIPE)
out, err = proc.communicate()
return (proc.returncode, out, err)
... In other words let shlex.split() do most of the work. I would NOT attempt to parse the shell's command line, find pipe operators and set up your own pipeline. If you're going to do that then you'll basically have to write a complete shell syntax parser and you'll end up doing an awful lot of plumbing.
Of course this raises the question, why not just use Popen with the shell=True (keyword) option? This will let you pass a string (no splitting nor parsing) to the shell and still gather up the results to handle as you wish. My example here won't process any pipelines, backticks, file descriptor redirection, etc that might be in the command, they'll all appear as literal arguments to the command. Thus it is still safer then running with shell=True ... I've given a silly example of checking the command against some sort of "approved command" dictionary or set --- through it would make more sense to normalize that into an absolute path unless you intend to require that the arguments be normalized prior to passing the command string to this function.
Another way is to simply remove collapse navbar-collapse
from the markup. Example with Bootstrap 3.3.7
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">_x000D_
_x000D_
<nav class="navbar navbar-atp">_x000D_
<div class="container-fluid">_x000D_
<div class="">_x000D_
<ul class="nav navbar-nav nav-custom">_x000D_
<li>_x000D_
<a href="#" id="sidebar-btn"><span class="fa fa-bars">Toggle btn</span></a>_x000D_
</li>_x000D_
</ul>_x000D_
<ul class="nav navbar-nav navbar-right">_x000D_
<li>Nav item</li>_x000D_
</ul>_x000D_
</div>_x000D_
</div>_x000D_
</nav>
_x000D_
As Ed said, CompareTo is used for sorting.
There is a difference, however, between .Equals and ==.
== resolves to essentially the following code:
if(object.ReferenceEquals(left, null) &&
object.ReferenceEquals(right, null))
return true;
if(object.ReferenceEquals(left, null))
return right.Equals(left);
return left.Equals(right);
The simple reason is the following will throw an exception:
string a = null;
string b = "foo";
bool equal = a.Equals(b);
And the following will not:
string a = null;
string b = "foo";
bool equal = a == b;
If the files are gzip'd
. Then just use:
gunzip -rfk .
from the root directory to recursively extract files in respective directories by keeping the original ones (or remove -k
to delete them)
v15.8.0
, LTS v14.15.4
, and v12.20.1
--- Feb 2021Async method (Unix):
'use strict';
const { spawn } = require( 'child_process' );
const ls = spawn( 'ls', [ '-lh', '/usr' ] );
ls.stdout.on( 'data', ( data ) => {
console.log( `stdout: ${ data }` );
} );
ls.stderr.on( 'data', ( data ) => {
console.log( `stderr: ${ data }` );
} );
ls.on( 'close', ( code ) => {
console.log( `child process exited with code ${ code }` );
} );
Async method (Windows):
'use strict';
const { spawn } = require( 'child_process' );
// NOTE: Windows Users, this command appears to be differ for a few users.
// You can think of this as using Node to execute things in your Command Prompt.
// If `cmd` works there, it should work here.
// If you have an issue, try `dir`:
// const dir = spawn( 'dir', [ '.' ] );
const dir = spawn( 'cmd', [ '/c', 'dir' ] );
dir.stdout.on( 'data', ( data ) => console.log( `stdout: ${ data }` ) );
dir.stderr.on( 'data', ( data ) => console.log( `stderr: ${ data }` ) );
dir.on( 'close', ( code ) => console.log( `child process exited with code ${code}` ) );
Sync:
'use strict';
const { spawnSync } = require( 'child_process' );
const ls = spawnSync( 'ls', [ '-lh', '/usr' ] );
console.log( `stderr: ${ ls.stderr.toString() }` );
console.log( `stdout: ${ ls.stdout.toString() }` );
From Node.js v15.8.0 Documentation
The same goes for Node.js v14.15.4 Documentation and Node.js v12.20.1 Documentation
You want the NPGSQL library. Your only other alternative is ODBC.
AtomicBoolean
has methods that perform their compound operations atomically and without having to use a synchronized
block. On the other hand, volatile boolean
can only perform compound operations if done so within a synchronized
block.
The memory effects of reading/writing to volatile boolean
are identical to the get
and set
methods of AtomicBoolean
respectively.
For example the compareAndSet
method will atomically perform the following (without a synchronized
block):
if (value == expectedValue) {
value = newValue;
return true;
} else {
return false;
}
Hence, the compareAndSet
method will let you write code that is guaranteed to execute only once, even when called from multiple threads. For example:
final AtomicBoolean isJobDone = new AtomicBoolean(false);
...
if (isJobDone.compareAndSet(false, true)) {
listener.notifyJobDone();
}
Is guaranteed to only notify the listener once (assuming no other thread sets the AtomicBoolean
back to false
again after it being set to true
).
Use cbind
e.g.
df <- data.frame(b = runif(6), c = rnorm(6))
cbind(a = 0, df)
giving:
> cbind(a = 0, df)
a b c
1 0 0.5437436 -0.1374967
2 0 0.5634469 -1.0777253
3 0 0.9018029 -0.8749269
4 0 0.1649184 -0.4720979
5 0 0.6992595 0.6219001
6 0 0.6907937 -1.7416569
.id
is not a valid jquery function. You need to use the .attr()
function to access attributes an element possesses. You can use .attr()
to both change an attribute value by specifying two parameters, or get the value by specifying one.
This was alluded to in another comment, but you could try something like this.
Sub FilterAndDelete()
Application.DisplayAlerts = False
With Sheet1 'Change this to your sheet name
.AutoFilterMode = False
.Range("A3:K3").AutoFilter
.Range("A3:K3").AutoFilter Field:=5, Criteria1:="none"
.UsedRange.Offset(1, 0).Resize(ActiveSheet.UsedRange.Rows.Count - 1).Rows.Delete
End With
Application.DisplayAlerts = True
End Sub
I haven't tested this and it is from memory, so it may require some tweaking but it should get the job done without looping through thousands of rows. You'll need to remove the 11-Jul so that UsedRange
is correct or change the offset to 2 rows instead of 1 in the .Offset(1,0)
.
Generally, before I do .Delete
I will run the macro with .Select
instead of the Delete that way I can be sure the correct range will be deleted, that may be worth doing to check to ensure the appropriate range is being deleted.
You can make an extension of UIImageView.
Swift 2.0
import Foundation
import UIKit
extension UIImageView
{
func makeBlurImage(targetImageView:UIImageView?)
{
let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Dark)
let blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = targetImageView!.bounds
blurEffectView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight] // for supporting device rotation
targetImageView?.addSubview(blurEffectView)
}
}
Usage:
override func viewDidLoad()
{
super.viewDidLoad()
let sampleImageView = UIImageView(frame: CGRectMake(0, 200, 300, 325))
let sampleImage:UIImage = UIImage(named: "ic_120x120")!
sampleImageView.image = sampleImage
//Convert To Blur Image Here
sampleImageView.makeBlurImage(sampleImageView)
self.view.addSubview(sampleImageView)
}
Swift 3 Extension
import Foundation
import UIKit
extension UIImageView
{
func addBlurEffect()
{
let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.light)
let blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = self.bounds
blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight] // for supporting device rotation
self.addSubview(blurEffectView)
}
}
Usage:
yourImageView.addBlurEffect()
Addendum:
extension UIView {
/// Remove UIBlurEffect from UIView
func removeBlurEffect() {
let blurredEffectViews = self.subviews.filter{$0 is UIVisualEffectView}
blurredEffectViews.forEach{ blurView in
blurView.removeFromSuperview()
}
}
Swift 5.0:
import UIKit
extension UIImageView {
func applyBlurEffect() {
let blurEffect = UIBlurEffect(style: .light)
let blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = bounds
blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
addSubview(blurEffectView)
}
}
you can't call sendRedirect(), after you have already used forward(). So, you get that exception.
Update on @ghostJago answer above
for me it worked as the following lines in VS2017
string curDir = Directory.GetCurrentDirectory();
this.webBrowser1.Navigate(new Uri(String.Format("file:///{0}/my_html.html", curDir)));
[[UIApplication sharedApplication] terminateWithSuccess];
It worked fine and automatically calls
- (void)applicationWillTerminateUIApplication *)application delegate.
to remove compile time warning add this code
@interface UIApplication(MyExtras)
- (void)terminateWithSuccess;
@end
In order to represent a single digit in the form of a regular expression you can use either:
[0-9] or \d
In order to specify how many times the number appears you would add
[0-9]*: the star means there are zero or more digits
[0-9]{2}: {N} means N digits
[0-9]{0,2}: {N,M} N digits or M digits
[0-9]{0-9}: {N-M} N digits to M digits. Note: M can be left blank for an infinite representation
Lets say I want to represent a number between 1 and 99 I would express it as such:
[0-9]{1-2} or [0-9]{1,2} or \d{1-2} or \d{1,2}
Or lets say we were working with binary display, displaying a byte size, we would want our digits to be between 0 and 1 and length of a byte size, 8, so we would represent it as follows:
[0-1]{8} representation of a binary byte
Then if you want to add a , or a . symbol you would use:
\, or \. or you can use [.] or [,]
You can also state a selection between possible values as such
[.,] means either a dot or a comma symbol
And you just need to concatenate the pieces together, so in the case where you want to represent a 1 or 2 digit number followed by either a comma or a period and followed by two more digits you would express it as follows: >
[0-9]{1,2}[.,]\d{1-2}
Also note that regular expression strings inside C++ strings must be double-back-slashed so every \ becomes \\
jQuery is a JavaScript library.
Read
wiki-jQuery, github, jQuery vs. javascript?
What is JQuery?
Before JQuery, developers would create their own small frameworks (the group of code) this would allow all the developers to work around all the bugs and give them more time to work on features, so the JavaScript frameworks were born. Then came the collaboration stage, groups of developers instead of writing their own code would give it away for free and creating JavaScript code sets that everyone could use. That is what JQuery is, a library of JavaScript code. The best way to explain JQuery and its mission is well stated on the front page of the JQuery website which says:
JQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development.
As you can see all JQuery is JavaScript. There is more than one type of JavaScript set of code sets like MooTools it is just that JQuery is the most popular.
Which is the best JavaScript or JQuery is a contentious discussion, really the answer is neither is best. They both have their roles I have worked on online applications where JQuery was not the right tool and what the application needed was straight JavaScript development. But for most websites JQuery is all that is needed. What a web developer needs to do is make an informed decision on what tools are best for their client. Someone first coming into web development does need some exposure to both technologies just using JQuery all the time does not teach the nuances of JavaScript and how it affects the DOM. Using JavaScript all the time slows projects down and because of the JQuery library has ironed most of the issues that JavaScript will have between each web browser it makes the deployment safe as it is sure to work across all platforms.
JavaScript is a language. jQuery is a library built with JavaScript to help JavaScript programmers who are doing common web tasks.
See here.
The answers above are correct, and what I'd consider the "best" answers. But just to be as complete as possible, you can also do this directly in CF using queryAddColumn.
See http://www.cfquickdocs.com/cf9/#queryaddcolumn
Again, it's more efficient to do it at the database level... but it's good to be aware of as many alternatives as possible (IMO, of course) :)
In my use case I only wanted to see if a Bluetooth headset is connected for a VoIP app. The following solution worked for me:
public static boolean isBluetoothHeadsetConnected() {
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
return mBluetoothAdapter != null && mBluetoothAdapter.isEnabled()
&& mBluetoothAdapter.getProfileConnectionState(BluetoothHeadset.HEADSET) == BluetoothHeadset.STATE_CONNECTED;
}
Of course you'll need the Bluetooth permission:
<uses-permission android:name="android.permission.BLUETOOTH" />
If you move from iframes, you may get lost in your page, best way to execute some jquery without issue (with selenimum/python/gecko):
# 1) Get back to the main body page
driver.switch_to.default_content()
# 2) Download jquery lib file to your current folder manually & set path here
with open('./_lib/jquery-3.3.1.min.js', 'r') as jquery_js:
# 3) Read the jquery from a file
jquery = jquery_js.read()
# 4) Load jquery lib
driver.execute_script(jquery)
# 5) Execute your command
driver.execute_script('$("#myId").click()')
Note that this will not work:
header('Location: $url');
You need to do this (for variable expansion):
header("Location: $url");
SELECT group,subGroup,COUNT(*) FROM tablename GROUP BY group,subgroup
This will pad left any string to a total width of 10 without worrying about parse errors:
String unpadded = "12345";
String padded = "##########".substring(unpadded.length()) + unpadded;
//unpadded is "12345"
//padded is "#####12345"
If you want to pad right:
String unpadded = "12345";
String padded = unpadded + "##########".substring(unpadded.length());
//unpadded is "12345"
//padded is "12345#####"
You can replace the "#" characters with whatever character you would like to pad with, repeated the amount of times that you want the total width of the string to be. E.g. if you want to add zeros to the left so that the whole string is 15 characters long:
String unpadded = "12345";
String padded = "000000000000000".substring(unpadded.length()) + unpadded;
//unpadded is "12345"
//padded is "000000000012345"
The benefit of this over khachik's answer is that this does not use Integer.parseInt, which can throw an Exception (for example, if the number you want to pad is too large like 12147483647). The disadvantage is that if what you're padding is already an int, then you'll have to convert it to a String and back, which is undesirable.
So, if you know for sure that it's an int, khachik's answer works great. If not, then this is a possible strategy.
When you assign a variable (x = ...
), you are creating a variable in the current scope (e.g. local to the current function). If it happens to shadow a variable fron an outer (e.g. global) scope, well too bad - Python doesn't care (and that's a good thing). So you can't do this:
x = 0
def f():
x = 1
f()
print x #=>0
and expect 1
. Instead, you need do declare that you intend to use the global x
:
x = 0
def f():
global x
x = 1
f()
print x #=>1
But note that assignment of a variable is very different from method calls. You can always call methods on anything in scope - e.g. on variables that come from an outer (e.g. the global) scope because nothing local shadows them.
Also very important: Member assignment (x.name = ...
), item assignment (collection[key] = ...
), slice assignment (sliceable[start:end] = ...
) and propably more are all method calls as well! And therefore you don't need global
to change a global's members or call it methods (even when they mutate the object).
Here is a short code snippet for shadowing cin/cout useful for programming contests:
#include <bits/stdc++.h>
using namespace std;
int main() {
ifstream cin("input.txt");
ofstream cout("output.txt");
int a, b;
cin >> a >> b;
cout << a + b << endl;
}
This gives additional benefit that plain fstreams are faster than synced stdio streams. But this works only for the scope of single function.
Global cin/cout redirect can be written as:
#include <bits/stdc++.h>
using namespace std;
void func() {
int a, b;
std::cin >> a >> b;
std::cout << a + b << endl;
}
int main() {
ifstream cin("input.txt");
ofstream cout("output.txt");
// optional performance optimizations
ios_base::sync_with_stdio(false);
std::cin.tie(0);
std::cin.rdbuf(cin.rdbuf());
std::cout.rdbuf(cout.rdbuf());
func();
}
Note that ios_base::sync_with_stdio
also resets std::cin.rdbuf
. So the order matters.
See also Significance of ios_base::sync_with_stdio(false); cin.tie(NULL);
Std io streams can also be easily shadowed for the scope of single file, which is useful for competitive programming:
#include <bits/stdc++.h>
using std::endl;
std::ifstream cin("input.txt");
std::ofstream cout("output.txt");
int a, b;
void read() {
cin >> a >> b;
}
void write() {
cout << a + b << endl;
}
int main() {
read();
write();
}
But in this case we have to pick std
declarations one by one and avoid using namespace std;
as it would give ambiguity error:
error: reference to 'cin' is ambiguous
cin >> a >> b;
^
note: candidates are:
std::ifstream cin
ifstream cin("input.txt");
^
In file test.cpp
std::istream std::cin
extern istream cin; /// Linked to standard input
^
See also How do you properly use namespaces in C++?, Why is "using namespace std" considered bad practice? and How to resolve a name collision between a C++ namespace and a global function?
I know Coop has already answered this question, but here is a version which also tracks where in the document the div is, rather than relying on a static value:
Javascript
var offset = $( ".sticky-header" ).offset();
var sticky = document.getElementById("sticky-header")
$(window).scroll(function() {
if ( $('body').scrollTop() > offset.top){
$('.sticky-header').addClass('fixed');
} else {
$('.sticky-header').removeClass('fixed');
}
});
CSS
.fixed{
position: fixed;
top: 0px;
}
This is common error, make sure that your file.war is built correctly. Just open .war file and check that your WebApplicationInitializer is there.
If a vector has N elements, there are N+1 possible answers for find. std::find and std::find_if return an iterator to the found element OR end() if no element is found. To change the code as little as possible, your find function should return the equivalent position:
size_t find( const vector<type>& where, int searchParameter )
{
for( size_t i = 0; i < where.size(); i++ ) {
if( conditionMet( where[i], searchParameter ) ) {
return i;
}
}
return where.size();
}
// caller:
const int position = find( firstVector, parameter );
if( position != secondVector.size() ) {
doAction( secondVector[position] );
}
I would still use std::find_if, though.
This function is compatible for numbers with dots or commas as decimals
function floatvalue($val){
$val = str_replace(",",".",$val);
$val = preg_replace('/\.(?=.*\.)/', '', $val);
return floatval($val);
}
This works for all kind of inputs (American or european style)
echo floatvalue('1.325.125,54'); // The output is 1325125.54
echo floatvalue('1,325,125.54'); // The output is 1325125.54
echo floatvalue('59,95'); // The output is 59.95
echo floatvalue('12.000,30'); // The output is 12000.30
echo floatvalue('12,000.30'); // The output is 12000.30
USE MyDB;
GO
ALTER SCHEMA dbo TRANSFER jonathan.MovieData;
GO
Ref: ALTER SCHEMA
you can download the pdf file using fetch, and print it with print.js
fetch("url")
.then(function (response) {
response.blob().then(function (blob) {
var reader = new FileReader();
reader.onload = function () {
//Remove the data:application/pdf;base64,
printJS({
printable: reader.result.substring(28),
type: 'pdf',
base64: true
});
};
reader.readAsDataURL(blob);
})
});
you can have those "static"-like classes. but i suppose, that something really important is missing: in php you don't have an app-cycle, so you won't get a real static (or singleton) in your whole application...
see Singleton in PHP
One additional suggestion to be explicit. It seems best to go from specific to general down the stack of errors to get the desired error to be caught, so the specific ones don't get masked by the general one.
url='http://www.google.com/blahblah'
try:
r = requests.get(url,timeout=3)
r.raise_for_status()
except requests.exceptions.HTTPError as errh:
print ("Http Error:",errh)
except requests.exceptions.ConnectionError as errc:
print ("Error Connecting:",errc)
except requests.exceptions.Timeout as errt:
print ("Timeout Error:",errt)
except requests.exceptions.RequestException as err:
print ("OOps: Something Else",err)
Http Error: 404 Client Error: Not Found for url: http://www.google.com/blahblah
vs
url='http://www.google.com/blahblah'
try:
r = requests.get(url,timeout=3)
r.raise_for_status()
except requests.exceptions.RequestException as err:
print ("OOps: Something Else",err)
except requests.exceptions.HTTPError as errh:
print ("Http Error:",errh)
except requests.exceptions.ConnectionError as errc:
print ("Error Connecting:",errc)
except requests.exceptions.Timeout as errt:
print ("Timeout Error:",errt)
OOps: Something Else 404 Client Error: Not Found for url: http://www.google.com/blahblah
All You have to do is git push origin master
, where origin
is the default name (alias) of Your remote repository and master
is the remote branch You want to push Your changes to.
You may also want to check these out:
This will remove the folders and files and leave the folder behind.
pushd "%pathtofolder%" && (rd /s /q "%pathtofolder%" 2>nul & popd)
Short story: A postman is asked to go home after home and receive the covers contains (letters, documents, cheques, gift cards, application, love letter) with the address written on it to deliver.
Suppose there is no cover and ask the postman to go home after home and receive all the things and deliver to other people, the postman can get confused.
So better wrap it with cover (in our story it is the interface) then he will do his job fine.
Now the postman's job is to receive and deliver the covers only (he wouldn't bothered what is inside in the cover).
Create a type of interface
not actual type, but implement it with actual type.
To create to interface means your components get Fit into the rest of code easily
I give you an example.
you have the AirPlane interface as below.
interface Airplane{
parkPlane();
servicePlane();
}
Suppose you have methods in your Controller class of Planes like
parkPlane(Airplane plane)
and
servicePlane(Airplane plane)
implemented in your program. It will not BREAK your code.
I mean, it need not to change as long as it accepts arguments as AirPlane
.
Because it will accept any Airplane despite actual type, flyer
, highflyr
, fighter
, etc.
Also, in a collection:
List<Airplane> plane;
// Will take all your planes.
The following example will clear your understanding.
You have a fighter plane that implements it, so
public class Fighter implements Airplane {
public void parkPlane(){
// Specific implementations for fighter plane to park
}
public void servicePlane(){
// Specific implementatoins for fighter plane to service.
}
}
The same thing for HighFlyer and other clasess:
public class HighFlyer implements Airplane {
public void parkPlane(){
// Specific implementations for HighFlyer plane to park
}
public void servicePlane(){
// specific implementatoins for HighFlyer plane to service.
}
}
Now think your controller classes using AirPlane
several times,
Suppose your Controller class is ControlPlane like below,
public Class ControlPlane{
AirPlane plane;
// so much method with AirPlane reference are used here...
}
Here magic comes as you may make your new AirPlane
type instances as many as you want and you are not changing the code of ControlPlane
class.
You can add an instance...
JumboJetPlane // implementing AirPlane interface.
AirBus // implementing AirPlane interface.
You may remove instances of previously created types too.
You either need to increase the max_connections
configuration setting or (probably better) use connection pooling to route a large number of user requests through a smaller connection pool.
https://wiki.postgresql.org/wiki/Number_Of_Database_Connections
There is an infinity in the NumPy library: from numpy import inf
. To get negative infinity one can simply write -inf
.
Very simple.
Rename your json file to ".js" instead ".json".
<script type="text/javascript" src="my_json.js"></script>
So follow your code normally.
<script type="text/javascript">
var obj = JSON.parse(contacts);
However, just for information, the content my json it's looks like the snip below.
contacts='[{"name":"bla bla", "email":bla bla, "address":"bla bla"}]';
aiohttp can be used with HTTP proxy already:
import asyncio
import aiohttp
@asyncio.coroutine
def do_request():
proxy_url = 'http://localhost:8118' # your proxy address
response = yield from aiohttp.request(
'GET', 'http://google.com',
proxy=proxy_url,
)
return response
loop = asyncio.get_event_loop()
loop.run_until_complete(do_request())
ExecuteNonQuery():
ExecuteReader():
ExecuteScalar():
Reference URL:
http://nareshkamuni.blogspot.in/2012/05/what-is-difference-between.html
I feed a 514 dimensional real-valued input to a Sequential
model in Keras.
My model is constructed in following way :
predictivemodel = Sequential()
predictivemodel.add(Dense(514, input_dim=514, W_regularizer=WeightRegularizer(l1=0.000001,l2=0.000001), init='normal'))
predictivemodel.add(Dense(257, W_regularizer=WeightRegularizer(l1=0.000001,l2=0.000001), init='normal'))
predictivemodel.compile(loss='mean_squared_error', optimizer='adam', metrics=['accuracy'])
When I print model.summary()
I get following result:
Layer (type) Output Shape Param # Connected to
================================================================
dense_1 (Dense) (None, 514) 264710 dense_input_1[0][0]
________________________________________________________________
activation_1 (None, 514) 0 dense_1[0][0]
________________________________________________________________
dense_2 (Dense) (None, 257) 132355 activation_1[0][0]
================================================================
Total params: 397065
________________________________________________________________
For the dense_1 layer , number of params is 264710. This is obtained as : 514 (input values) * 514 (neurons in the first layer) + 514 (bias values)
For dense_2 layer, number of params is 132355. This is obtained as : 514 (input values) * 257 (neurons in the second layer) + 257 (bias values for neurons in the second layer)
Maybe you find this simpler
select * from (
select ssn, sum(time) from downloads
group by ssn
order by sum(time) desc
) where rownum <= 10 --top 10 downloaders
Regards
K
This Class is Custom Circular Imageview with shadow, Stroke,saturation and using this Custom Circular ImageView you can make your image in Circular Shape with Radius. Guys for Circular Shadow ImageView No need Github this class is enough.
Adding CircularImageView to your layout
CircularImageView c=new CircularImageView(this,screen width,screen height,Bitmap myimage);
yourLayout.addView(c);**
public class CircularImageView extends android.support.v7.widget.AppCompatImageView
{
private final Context context;
private final int width, height;
private final Paint paint;
private final Paint paintBorder,imagePaint;
private final Bitmap bitmap2;
private final Paint paint3;
private Bitmap bitmap;
private BitmapShader shader;
private float radius = 4.0f;
float x = 0.0f;
float y = 8.0f;
private float stroke;
private float strokeWidth = 0.0f;
private Bitmap bitmap3;
private int corner_radius=50;
public CircularImageView(Context context, int width, int height, Bitmap bitmap) {
super(context);
this.context = context;
this.width = width;
this.height = height;
//here "bitmap" is the square shape(width* width) scaled bitmap ..
this.bitmap = bitmap;
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
paint3=new Paint();
paint3.setStyle(Paint.Style.STROKE);
paint3.setColor(Color.WHITE);
paint3.setAntiAlias(true);
paintBorder = new Paint();
imagePaint= new Paint();
paintBorder.setColor(Color.WHITE);
paintBorder.setAntiAlias(true);
this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
this.bitmap2 = Bitmap.createScaledBitmap(bitmap, (bitmap.getWidth() - 40), (bitmap.getHeight() - 40), true);
imagePaint.setAntiAlias(true);
invalidate();
}
@Override
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
Shader b;
if (bitmap3 != null)
b = new BitmapShader(bitmap3, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
else
b = new BitmapShader(bitmap2, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
imagePaint.setShader(b);
canvas.drawBitmap(maskedBitmap(), 20, 20, null);
}
private Bitmap maskedBitmap()
{
Bitmap l1 = Bitmap.createBitmap(width,width, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(l1);
paintBorder.setShadowLayer(radius, x, y, Color.parseColor("#454645"));
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
final RectF rect = new RectF();
rect.set(20, 20, bitmap2.getWidth(), bitmap2.getHeight());
canvas.drawRoundRect(rect, corner_radius, corner_radius, paintBorder);
canvas.drawRoundRect(rect, corner_radius, corner_radius, imagePaint);
if (strokeWidth!=0.0f)
{
paint3.setStrokeWidth(strokeWidth);
canvas.drawRoundRect(rect, corner_radius, corner_radius, paint3);
}
paint.setXfermode(null);
return l1;
}
// use seekbar here, here you have to pass "0 -- 250" here corner radius will change
public void setCornerRadius(int corner_radius)
{
this.corner_radius = corner_radius;
invalidate();
}
-------->use seekbar here, here you have to pass "0 -- 10.0f" here shadow radius will change
public void setShadow(float radius)
{
this.radius = radius;
invalidate();
}
// use seekbar here, here you have to pass "0 -- 10.0f" here stroke size will change
public void setStroke(float stroke)
{
this.strokeWidth = stroke;
invalidate();
}
private Bitmap updateSat(Bitmap src, float settingSat)
{
int w = src.getWidth();
int h = src.getHeight();
Bitmap bitmapResult =
Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
Canvas canvasResult = new Canvas(bitmapResult);
Paint paint = new Paint();
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(settingSat);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
paint.setColorFilter(filter);
canvasResult.drawBitmap(src, 0, 0, paint);
return bitmapResult;
}
// use seekbar here, here you have to pass "0 -- 2.0f" here saturation will change
public void setSaturation(float sat)
{
System.out.println("qqqqqqqqqq "+sat);
bitmap3=updateSat(bitmap2, sat);
invalidate();
}
}
// Seekbar to change radius
radius_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
text_radius.setText(""+progress);
circularImageView.setCornerRadius(progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
// Seekbar to change shadow
shadow_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
float f= 4+progress/10.0f;
text_shadow.setText(""+progress);
circularImageView.setShadow(f);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
// Seekbar to change saturation
saturation_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
int progressSat = saturation_seekbar.getProgress();
float sat = (float) ((progressSat*4 / 100.0f)-1.0f);
circularImageView.setSaturation(sat);
text_saturation.setText(""+progressSat);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
// Seekbar to change stroke
stroke_seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
if (progress==0)
{
float f=(progress*10.0f/100.0f);
circularImageView.setStroke(f);
}
else
{
float f=(progress*10.0f/100.0f);
circularImageView.setStroke(f);
}
text_stroke.setText(""+progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
//radius seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="50"
android:max="250"
android:id="@+id/radius_seekbar"
android:layout_height="wrap_content" />
//saturation seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="50"
android:max="100"
android:id="@+id/saturation_seekbar"
android:layout_height="wrap_content" />
//shadow seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="0"
android:max="100"
android:id="@+id/shadow_seekbar"
android:layout_height="wrap_content" />
//stroke seekbar in xml file
<SeekBar
android:layout_width="match_parent"
android:layout_gravity="center"
android:progress="0"
android:max="100"
android:id="@+id/stroke _seekbar"
android:layout_height="wrap_content" />
As said earlier, just do:
[[NSUserDefaults standardUserDefaults] setObject: [NSArray arrayWithObjects:@"el", nil] forKey:@"AppleLanguages"];
But to avoid having to restart the app, put the line in the main method of main.m
, just before UIApplicationMain
(...).
Maybe the author of that unnamed book has read that a > 0
runs faster than a >= 1
and thinks that is true universally.
But it is because a 0
is involved (because CMP
can, depending on the architecture, replaced e.g. with OR
) and not because of the <
.
Try this
padding:8px;
overflow: hidden;
zoom: 1;
text-align: left;
font-size: 13px;
font-family: "Trebuchet MS",Arial,Sans;
line-height: 24px;
color: black;
border-bottom: solid 1px #BBB;
background:url('images/checked.gif') white no-repeat;
This is full css.. Why you use padding:0 8px
, then override it with paddings? This is what you need...
if (charCode > 47 && charCode < 58) {
document.getElementById("error").innerHTML = "*Please Enter Your Name Only";
document.getElementById("fullname").focus();
document.getElementById("fullname").style.borderColor = 'red';
return false;
} else {
document.getElementById("error").innerHTML = "";
document.getElementById("fullname").style.borderColor = '';
return true;
}
Set Web Application project as Startup Project
Run the following commands with -verbose
option.
Add-Migration Init -Verbose
-verbose
option helps to actually uncover the real problem, It contains detailed errors.
Rename BuildWebHost()
to CreateWebHostBuilder()
, because Entity Framework Core tools
expect to find a CreateHostBuilder
method that configures the host without running the app.
.NET Core 2.2
public class Program
{
public static void Main(string[] args)
{
CreateWebHostBuilder(args).Build().Run();
}
public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>();
}
.NET Core 3.1
Rename BuildWebHost()
to CreateHostBuilder()
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
Make sure you added Dbcontext
to dependency injection:
AddDbContext<TContext>
will make both your DbContext type, TContext
, and the corresponding DbContextOptions<TContext>
available for injection from the service container.
This requires adding a constructor argument to your DbContext
type that accepts DbContextOptions<TContext>
.
Example: In Startup.cs
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<AppDbContext>(options => options.UseSqlServer(connectionString));
}
AppDbContext code:
public class AppDbContext: DbContext
{
public AppDbContext(DbContextOptions<AppDbContext> options)
:base(options)
{ }
}
According to the jQuery Plugin Authoring page (http://docs.jquery.com/Plugins/Authoring), it's best not to muddy up the jQuery and jQuery.fn namespaces. They suggest this method:
(function( $ ){
var methods = {
init : function(options) {
},
show : function( ) { },// IS
hide : function( ) { },// GOOD
update : function( content ) { }// !!!
};
$.fn.tooltip = function(methodOrOptions) {
if ( methods[methodOrOptions] ) {
return methods[ methodOrOptions ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof methodOrOptions === 'object' || ! methodOrOptions ) {
// Default to "init"
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + methodOrOptions + ' does not exist on jQuery.tooltip' );
}
};
})( jQuery );
Basically you store your functions in an array (scoped to the wrapping function) and check for an entry if the parameter passed is a string, reverting to a default method ("init" here) if the parameter is an object (or null).
Then you can call the methods like so...
$('div').tooltip(); // calls the init method
$('div').tooltip({ // calls the init method
foo : 'bar'
});
$('div').tooltip('hide'); // calls the hide method
$('div').tooltip('update', 'This is the new tooltip content!'); // calls the update method
Javascripts "arguments" variable is an array of all the arguments passed so it works with arbitrary lengths of function parameters.
When you say you increased MAVEN_OPTS
, what values did you increase? Did you increase the MaxPermSize
, as in example:
export MAVEN_OPTS="-Xmx512m -XX:MaxPermSize=128m"
(or on Windows:)
set MAVEN_OPTS=-Xmx512m -XX:MaxPermSize=128m
You can also specify these JVM options in each maven project separately.
Basically, tree conflicts arise if there is some restructure in the folder structure on the branch.
You need to delete the conflict folder and use svn clean
once.
Hope this solves your conflict.
Here's my approach: The location.params()
function (shown below) can be used as a getter or setter. Examples:
Given the URL is http://example.com/?foo=bar&baz#some-hash
,
location.params()
will return an object with all the query parameters: {foo: 'bar', baz: true}
.location.params('foo')
will return 'bar'
.location.params({foo: undefined, hello: 'world', test: true})
will change the URL to http://example.com/?baz&hello=world&test#some-hash
.Here is the params()
function, which can optionally be assigned to the window.location
object.
location.params = function(params) {
var obj = {}, i, parts, len, key, value;
if (typeof params === 'string') {
value = location.search.match(new RegExp('[?&]' + params + '=?([^&]*)[&#$]?'));
return value ? value[1] : undefined;
}
var _params = location.search.substr(1).split('&');
for (i = 0, len = _params.length; i < len; i++) {
parts = _params[i].split('=');
if (! parts[0]) {continue;}
obj[parts[0]] = parts[1] || true;
}
if (typeof params !== 'object') {return obj;}
for (key in params) {
value = params[key];
if (typeof value === 'undefined') {
delete obj[key];
} else {
obj[key] = value;
}
}
parts = [];
for (key in obj) {
parts.push(key + (obj[key] === true ? '' : '=' + obj[key]));
}
location.search = parts.join('&');
};
You can change the 'template/popover/popover.html' in file 'ui-bootstrap-tpls-0.11.0.js' Write: "bind-html-unsafe" instead of "ng-bind"
It will show all popover with html. *its unsafe html. Use only if you trust the html.
Create .jshintrc
file in the root dir and add there the latest js version: "esversion": 9
and asi version: "asi": true
(it will help you to avoid using semicolons)
{
"esversion": 9,
"asi": true
}
No, this is not working. And it's not just for you, in case you spent the last hour trying to find an answer for having your embeded videos open in HD.
Question: Oh, but how do you know this is not working anymore and there is no other alternative to make embeded videos open in a different quality?
Answer: Just went to Google's official documentation regarding Youtube's player parameters and there is not a single parameter that allows you to change its quality.
Also, hd=1
doesn't work either. More info here.
Apparently Youtube analyses the width and height of the user's window (or iframe) and automatically sets the quality based on this.
UPDATE:
As of 10 of April of 2018 it still doesn't work (see my comment on the accepted answer for more details).
What I can see from comments is that it MAY work sometimes, but some others it doesn't. The accepted answer states that "it measures the network speed and the screen and player sizes". So, by that, we can understand that I CANNOT force HD as YouTube will still do whatever it wants in case of low network speed/screen resolution. From my perspective everyone saying it works just have false positives on their hands and on the occasion they tested it worked for some random reason not related to the vq
parameter. If it was a valid parameter, Google would document it somewhere, and vq
isn't documented anywhere.
Assuming your setup is something like: ln -s /mnt/bar ~/foo
, then you should be able to do a rm foo
with no problem. If you can't, make sure you are the owner of the foo
and have permission to write/execute the file. Removing foo
will not touch bar
, unless you do it recursively.
I had the same issue displaying my side navigation panel height to 100%.
My steps to fix it was to:
In the index.css file ------
.html {
height: 100%;
}
.body {
height:100%;
}
In the sidePanel.css (this was giving me issues):
.side-panel {
height: 100%;
position: fixed; <--- this is what made the difference and scaled to 100% correctly
}
Other attributes were taken out for clarity, but I think the issue lies with scaling the height to 100% in nested containers like how you are trying to scale height in your nested containers. The parent classes height will need to be applied the 100%. - What i'm curious about is why fixed: position corrects the scale and fails without it; this is something i'll learn eventually with some more practice.
I've been working with react for a week now and i'm a novice to web developing, but I wanted to share a fix that I discovered with scaling height to 100%; I hope this helps you or anyone who has a similar issue. Good luck!
you also need to identify the columns to set dimensions:
foreach (range('A', $phpExcelObject->getActiveSheet()->getHighestDataColumn()) as $col) {
$phpExcelObject
->getActiveSheet()
->getColumnDimension($col)
->setAutoSize(true);
}
Use these raw values and copy in info.plist
<key>NSCalendarsUsageDescription</key>
<string>$(PRODUCT_NAME) calendar events</string>
<key>NSRemindersUsageDescription</key>
<string>$(PRODUCT_NAME) reminder use</string>
<key>NSCameraUsageDescription</key>
<string>This app requires to access your photo library to show image on profile and send via chat</string>
<key>NSMicrophoneUsageDescription</key>
<string>This app requires to access your microphone to record video with your voice send via chat</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>This app requires to access your photo library to show image on profile and send via chat</string>
<key>NSContactsUsageDescription</key>
<string>$(PRODUCT_NAME) contact use</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>$(PRODUCT_NAME) location use</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>$(PRODUCT_NAME) location use</string>
For me how it worked is, I have two executable versions of python so on pip install it was installing in one version but my executable path version is different so it failed, then I changed the path in sys's environment variable and installed in the executable version of python and it was able to identify the package from site-packages
Your query should look like
UPDATE table_name
SET column1=value, column2=value2,...
WHERE some_column=some_value
You can check the below question for help
Just to notify here. (from a newbee, keviv22)
Never and ever for the sake of your own good, name the folders or files with symbols like "-" or "_". If you did so, you may face few issues. like mine, say, though your command for importing is correct, you wont be able to successfully import the desired files which are available inside such named folders.
Invalid Folder namings as follows:
valid Folder namings for above:
What mistake I did:
consider the file structure.
Parent
. __init__.py
. Setup
.. __init__.py
.. Generic-Class-Folder
... __init__.py
... targetClass.py
. Check
.. __init__.py
.. testFile.py
What I wanted to do?
What command I did?
from Core.Generic-Class-Folder.targetClass import functionExecute
SyntaxError: invalid syntax
Tried many searches and viewed many stackoverflow questions and unable to decide what went wrong. I cross checked my files multiple times, i used __init__.py
file, inserted environment path and hugely worried what went wrong......
And after a long long long time, i figured this out while talking with a friend of mine. I am little stupid to use such naming conventions. I should never use space or special symbols to define a name for any folder or file. So, this is what I wanted to convey. Have a good day!
(sorry for the huge post over this... just letting my frustrations go.... :) Thanks!)
The key is the sql query, which you will set up as a string:
$sqlquery = "SELECT field1, field2 FROM table WHERE NOT columnA = 'x' AND NOT columbB = 'y'";
Note that there are a lot of ways to specify NOT. Another one that works just as well is:
$sqlquery = "SELECT field1, field2 FROM table WHERE columnA != 'x' AND columbB != 'y'";
Here is a full example of how to use it:
$link = mysql_connect($dbHost,$dbUser,$dbPass) or die("Unable to connect to database");
mysql_select_db("$dbName") or die("Unable to select database $dbName");
$sqlquery = "SELECT field1, field2 FROM table WHERE NOT columnA = 'x' AND NOT columbB = 'y'";
$result=mysql_query($sqlquery);
while ($row = mysql_fetch_assoc($result) {
//do stuff
}
You can do whatever you would like within the above while loop. Access each field of the table as an element of the $row array
which means that $row['field1']
will give you the value for field1
on the current row, and $row['field2']
will give you the value for field2
.
Note that if the column(s) could have NULL
values, those will not be found using either of the above syntaxes. You will need to add clauses to include NULL
values:
$sqlquery = "SELECT field1, field2 FROM table WHERE (NOT columnA = 'x' OR columnA IS NULL) AND (NOT columbB = 'y' OR columnB IS NULL)";
The error Event
the onerror
handler receives is a simple event not containing such information:
If the user agent was required to fail the WebSocket connection or the WebSocket connection is closed with prejudice, fire a simple event named error at the WebSocket object.
You may have better luck listening for the close
event, which is a CloseEvent
and indeed has a CloseEvent.code
property containing a numerical code according to RFC 6455 11.7 and a CloseEvent.reason
string property.
Please note however, that CloseEvent.code
(and CloseEvent.reason
) are limited in such a way that network probing and other security issues are avoided.
For Each row As DataGridViewRow In yourDGV.SelectedRows
yourDGV.Rows.Remove(row)
Next
This will delete all rows that had been selected.
If you structure your project this way:
src\
__init__.py
main.py
dirFoo\
__init__.py
Foo.py
dirBar\
__init__.py
Bar.py
Then from Foo.py you should be able to do:
import dirFoo.Foo
Or:
from dirFoo.Foo import FooObject
Per Tom's comment, this does require that the src
folder is accessible either via site_packages
or your search path. Also, as he mentions, __init__.py
is implicitly imported when you first import a module in that package/directory. Typically __init__.py
is simply an empty file.
This took me a while to figure out so this is how I got it working - Angular WebAPI ASP Routing without the # for SEO
Add $locationProvider.html5Mode(true); to app.config
I needed a certain controller (which was in the home controller) to be ignored for uploading images so I added that rule to RouteConfig
routes.MapRoute(
name: "Default2",
url: "Home/{*.}",
defaults: new { controller = "Home", action = "SaveImage" }
);
In Global.asax add the following - making sure to ignore api and image upload paths let them function as normal otherwise reroute everything else.
private const string ROOT_DOCUMENT = "/Index.html";
protected void Application_BeginRequest(Object sender, EventArgs e)
{
var path = Request.Url.AbsolutePath;
var isApi = path.StartsWith("/api", StringComparison.InvariantCultureIgnoreCase);
var isImageUpload = path.StartsWith("/home", StringComparison.InvariantCultureIgnoreCase);
if (isApi || isImageUpload)
return;
string url = Request.Url.LocalPath;
if (!System.IO.File.Exists(Context.Server.MapPath(url)))
Context.RewritePath(ROOT_DOCUMENT);
}
Make sure to use $location.url('/XXX') and not window.location ... to redirect
Reference the CSS files with absolute path
and not
<link href="app/content/bootstrapwc.css" rel="stylesheet" />
Final note - doing it this way gave me full control and I did not need to do anything to the web config.
Hope this helps as this took me a while to figure out.
The answers so far are great! But I see a need for a solution with the following constraints:
Here it is:
public static T MaxBy<T, R>(this IEnumerable<T> en, Func<T, R> evaluate) where R : IComparable<R> {
return en.Select(t => new Tuple<T, R>(t, evaluate(t)))
.Aggregate((max, next) => next.Item2.CompareTo(max.Item2) > 0 ? next : max).Item1;
}
public static T MinBy<T, R>(this IEnumerable<T> en, Func<T, R> evaluate) where R : IComparable<R> {
return en.Select(t => new Tuple<T, R>(t, evaluate(t)))
.Aggregate((max, next) => next.Item2.CompareTo(max.Item2) < 0 ? next : max).Item1;
}
Usage:
IEnumerable<Tuple<string, int>> list = new[] {
new Tuple<string, int>("other", 2),
new Tuple<string, int>("max", 4),
new Tuple<string, int>("min", 1),
new Tuple<string, int>("other", 3),
};
Tuple<string, int> min = list.MinBy(x => x.Item2); // "min", 1
Tuple<string, int> max = list.MaxBy(x => x.Item2); // "max", 4
For users of GitHub, this worked for me:
git reset --hard <full_hash_of_commit_to_reset_to>
git push --force
This will "correct" the branch history on your local machine and the GitHub server, but anyone who has sync'ed this branch with the server since the bad commit will have the history on their local machine. If they have permission to push to the branch directly then these commits will show right back up when they sync.
All everyone else needs to do is the git reset
command from above to "correct" the branch on their local machine. Of course they would need to be wary of any local commits made to this branch after the target hash. Cherry pick/backup and reapply those as necessary, but if you are in a protected branch then the number of people who can commit directly to it is likely limited.
Trying to give you a brief answer to your doubt, if you execute the skip(n).take(m)
methods on linq (with SQL 2005 / 2008 as database server) your query will be using the Select ROW_NUMBER() Over ...
statement, with is somehow direct paging in the SQL engine.
Giving you an example, I have a db table called mtcity
and I wrote the following query (work as well with linq to entities):
using (DataClasses1DataContext c = new DataClasses1DataContext())
{
var query = (from MtCity2 c1 in c.MtCity2s
select c1).Skip(3).Take(3);
//Doing something with the query.
}
The resulting query will be:
SELECT [t1].[CodCity],
[t1].[CodCountry],
[t1].[CodRegion],
[t1].[Name],
[t1].[Code]
FROM (
SELECT ROW_NUMBER() OVER (
ORDER BY [t0].[CodCity],
[t0].[CodCountry],
[t0].[CodRegion],
[t0].[Name],
[t0].[Code]) AS [ROW_NUMBER],
[t0].[CodCity],
[t0].[CodCountry],
[t0].[CodRegion],
[t0].[Name],
[t0].[Code]
FROM [dbo].[MtCity] AS [t0]
) AS [t1]
WHERE [t1].[ROW_NUMBER] BETWEEN @p0 + 1 AND @p0 + @p1
ORDER BY [t1].[ROW_NUMBER]
Which is a windowed data access (pretty cool, btw cuz will be returning data since the very begining and will access the table as long as the conditions are met). This will be very similar to:
With CityEntities As
(
Select ROW_NUMBER() Over (Order By CodCity) As Row,
CodCity //here is only accessed by the Index as CodCity is the primary
From dbo.mtcity
)
Select [t0].[CodCity],
[t0].[CodCountry],
[t0].[CodRegion],
[t0].[Name],
[t0].[Code]
From CityEntities c
Inner Join dbo.MtCity t0 on c.CodCity = t0.CodCity
Where c.Row Between @p0 + 1 AND @p0 + @p1
Order By c.Row Asc
With the exception that, this second query will be executed faster than the linq result because it will be using exclusively the index to create the data access window; this means, if you need some filtering, the filtering should be (or must be) in the Entity listing (where the row is created) and some indexes should be created as well to keep up the good performance.
Now, whats better?
If you have pretty much solid workflow in your logic, implementing the proper SQL way will be complicated. In that case LINQ will be the solution.
If you can lower that part of the logic directly to SQL (in a stored procedure), it will be even better because you can implement the second query I showed you (using indexes) and allow SQL to generate and store the Execution Plan of the query (improving performance).
edit: completely redone question
Simply test what system they are on and send a system command depending on the system. though this will be set at compile time
#ifdef __WIN32
system("cls");
#else
system("clear"); // most other systems use this
#endif
This is a completely new method!
Here's another way -
cat > outfile.txt
>Enter text
>to save press ctrl-d
You need System.Diagnostics.Process.Start()
.
The simplest example:
Process.Start("notepad.exe", fileName);
More Generic Approach:
Process.Start(fileName);
The second approach is probably a better practice as this will cause the windows Shell to open up your file with it's associated editor. Additionally, if the file specified does not have an association, it'll use the Open With...
dialog from windows.
Note to those in the comments, thankyou for your input. My quick n' dirty answer was slightly off, i've updated the answer to reflect the correct way.
After some experimenting, I made some mods to mehow's code as follows:
I also noted that the project must have trust for the VBA project object model enabled.
' DEPENDENCIES
' 1. Add reference:
' Tools > References > Microsoft Visual Basic for Applications Extensibility 5.3
' 2. Enable VBA project access:
' Backstage / Options / Trust Centre / Trust Center Settings / Trust access to the VBA project object model
Public Function ClearImmediateWindow()
On Error GoTo ErrorHandler
Dim myVBE As VBE
Dim winImm As VBIDE.Window
Dim winActive As VBIDE.Window
Set myVBE = Application.VBE
Set winActive = myVBE.ActiveWindow
Set winImm = myVBE.Windows("Immediate")
' Make sure the Immediate window is visible
winImm.Visible = True
' Switch the focus to the Immediate window
winImm.SetFocus
' Send the key sequence to select the window contents and delete it:
' Ctrl+Home to move cursor to the top then Ctrl+Shift+End to move while
' selecting to the end then Delete
SendKeys "^{Home}", False
SendKeys "^+{End}", False
SendKeys "{Del}", False
' Return the focus to the user's original window
' (comment out next line if your code disappears instead!)
'winActive.SetFocus
' Release object variables memory
Set myVBE = Nothing
Set winImm = Nothing
Set winActive = Nothing
' Avoid the error handler and exit this procedure
Exit Function
ErrorHandler:
MsgBox "Error " & Err.Number & vbCrLf & vbCrLf & Err.Description, _
vbCritical + vbOKOnly, "There was an unexpected error."
Resume Next
End Function
PHP was not designed to explicitly give you a pure REST (GET, POST, PUT, PATCH, DELETE) like interface for handling HTTP requests.
However, the $_SERVER
, $_COOKIE
, $_POST
, $_GET
, and $_FILES
superglobals, and the function filter_input_array()
are very useful for the average person's / layman's needs.
The number one hidden advantage of $_POST
(and $_GET
) is that your input data is url-decoded automatically by PHP. You never even think about having to do it, especially for query string parameters within a standard GET
request, or HTTP body data submitted with a POST
request.
Those studying the underlying HTTP protocol and its various request methods come to understand that there are many HTTP request methods, including the often referenced PUT
, PATCH
(not used in Google's Apigee), and DELETE
.
In PHP, there are no superglobals or input filter functions for getting HTTP request body data when POST
is not used. What are disciples of Roy Fielding to do? ;-)
That being said, as you advance in your PHP programming knowledge and want to use JavaScript's XmlHttpRequest
object (jQuery for some), you come to see the limitation of this scheme.
$_POST
limits you to the use of two media types in the HTTP Content-Type
header:
application/x-www-form-urlencoded
, andmultipart/form-data
Thus, if you want to send data values to PHP on the server, and have it show up in the $_POST
superglobal, then you must urlencode it on the client-side and send said data as key/value pairs--an inconvenient step for novices (especially when trying to figure out if different parts of the URL require different forms of urlencoding: normal, raw, etc..).
For all you jQuery users, the $.ajax()
method is converting your JSON to URL encoded key/value pairs before transmitting them to the server. You can override this behavior by setting processData: false
. Just read the $.ajax() documentation, and don't forget to send the correct media type in the Content-Type header.
Even if you use php://input
instead of $_POST
for your HTTP POST
request body data, it will not work with an HTTP Content-Type
of multipart/form-data
This is the content type that you use on an HTML form when you want to allow file uploads!
<form enctype="multipart/form-data" accept-charset="utf-8" action="post">
<input type="file" name="resume">
</form>
Therefore, in traditional PHP, to deal with a diversity of content types from an HTTP POST
request, you will learn to use $_POST
or filter_input_array(POST)
, $_FILES
, and php://input
. There is no way to just use one, universal input source for HTTP POST
requests in PHP.
You cannot get files through $_POST
, filter_input_array(POST), or php://input
, and you cannot get JSON/XML/YAML in either filter_input_array(POST)
or $_POST
.
php://input is a read-only stream that allows you to read raw data from the request body...php://input is not available with enctype="multipart/form-data".
PHP frameworks like Codeigniter 4 and Laravel use a facade to provide a cleaner interface (IncomingRequest
or Request
objects) to the above. This is why professional PHP developers use frameworks instead of raw PHP.
Of course, if you like to program, you can devise your own facade object to provide what frameworks do. It is because I have taken time to investigate this issue that I am able to write this answer.
Typically, if you are doing a normal, synchronous (when the entire page redraws) HTTP requests with an HTML form, the user-agent (web browser) will urlencode your form data for you. If you want to do an asynchronous HTTP requests using the XmlHttpRequest
object, then you must fashion a urlencoded string and send it, if you want that data to show up in the $_POST
superglobal.
Converting from a JavaScript array or object to a urlencoded string bothers many developers (even with new APIs like Form Data). They would much rather just be able to send JSON, and it would be more efficient for the client code to do so.
Remember (wink, wink), the average web developer does not learn to use the XmlHttpRequest
object directly, global functions, string functions, array functions, and regular expressions like you and I ;-). Urlencoding for them is a nightmare. ;-)
PHP's lack of intuitive XML and JSON handling turns many people off. You would think it would be part of PHP by now (sigh).
XML, JSON, and YAML all have media types that can be put into an HTTP Content-Type
header.
Look how many media-types (formerly, MIME types) are defined by IANA.
Look how many HTTP headers there are.
Using the php://input
stream allows you to circumvent the baby-sitting / hand holding level of abstraction that PHP has forced on the world. :-) With great power comes great responsibility!
Now, before you deal with data values streamed through php://input
, you should / must do a few things.
AH, HA! Yes, you might want the data stream being sent into your application to be UTF-8 encoded, but how can you know if it is or not?
php://input
.Are you going to attempt to handle stream data without knowing how much is there first? That is a terrible idea. You cannot rely exclusively on the HTTP Content-Length
header for guidance on the size of streamed input because it can be spoofed.
You are going to need a:
Are you going to attempt to convert stream data to UTF-8 without knowing the current encoding of the stream? How? The iconv stream filter (iconv stream filter example) seems to want a starting and ending encoding, like this.
'convert.iconv.ISO-8859-1/UTF-8'
Thus, if you are conscientious, you will need:
(Update: 'convert.iconv.UTF-8/UTF-8'
will force everything to UTF-8, but you still have to account for characters that the iconv library might not know how to translate. In other words, you have to some how define what action to take when a character cannot be translated: 1) Insert a dummy character, 2) Fail / throw and exception).
You cannot rely exclusively on the HTTP Content-Encoding
header, as this might indicate something like compression as in the following. This is not what you want to make a decision off of in regards to iconv.
Content-Encoding: gzip
Part I: HTTP Request Related
Part II: Stream Data Related
Part III: Data Type Related
(Remember, the data can still be a URL encoded string which you must then parse and URL decode).
Part IV: Data Value Related
Filter input data.
Validate input data.
The $_POST
superglobal, along with php.ini settings for limits on input, are simpler for the layman. However, dealing with character encoding is much more intuitive and efficient when using streams because there is no need to loop through superglobals (or arrays, generally) to check input values for the proper encoding.
if you are using SPYDER IDE , just try to restart the console or restart the IDE, it works
replace "150x150" with 720x720 and remove /vp/ from the link.it should work.
I solved the problem using Dmitry Komin solution, but with different CSS syntax to make it works directly in browser.
CSS
@media(min-width: 1400px){
.my-modal > .modal-lg {
width: 1308px;
}
}
JS is the same:
var modal = $modal.open({
animation: true,
templateUrl: 'modalTemplate.html',
controller: 'modalController',
size: 'lg',
windowClass: 'my-modal'
});
This might work for you:
printf "{new\nto\nlinux}" | paste -sd' '
{new to linux}
or:
printf "{new\nto\nlinux}" | tr '\n' ' '
{new to linux}
or:
printf "{new\nto\nlinux}" |sed -e ':a' -e '$!{' -e 'N' -e 'ba' -e '}' -e 's/\n/ /g'
{new to linux}
you can always execute SQL.
update [your table] set [your column]=value
for example
update Foo set Bar=125
I'm assuming that by empty you mean "has no properties of its own".
// Speed up calls to hasOwnProperty
var hasOwnProperty = Object.prototype.hasOwnProperty;
function isEmpty(obj) {
// null and undefined are "empty"
if (obj == null) return true;
// Assume if it has a length property with a non-zero value
// that that property is correct.
if (obj.length > 0) return false;
if (obj.length === 0) return true;
// If it isn't an object at this point
// it is empty, but it can't be anything *but* empty
// Is it empty? Depends on your application.
if (typeof obj !== "object") return true;
// Otherwise, does it have any properties of its own?
// Note that this doesn't handle
// toString and valueOf enumeration bugs in IE < 9
for (var key in obj) {
if (hasOwnProperty.call(obj, key)) return false;
}
return true;
}
Examples:
isEmpty(""), // true
isEmpty(33), // true (arguably could be a TypeError)
isEmpty([]), // true
isEmpty({}), // true
isEmpty({length: 0, custom_property: []}), // true
isEmpty("Hello"), // false
isEmpty([1,2,3]), // false
isEmpty({test: 1}), // false
isEmpty({length: 3, custom_property: [1,2,3]}) // false
If you only need to handle ECMAScript5 browsers, you can use Object.getOwnPropertyNames
instead of the hasOwnProperty
loop:
if (Object.getOwnPropertyNames(obj).length > 0) return false;
This will ensure that even if the object only has non-enumerable properties isEmpty
will still give you the correct results.
None of the other answers dealt with the case of using .children()
or .find(">")
to only search for immediate children of a parent element. So, I created a jsPerf test to find out, using three different ways to distinguish children.
As it happens, even when using the extra ">" selector, .find()
is still a lot faster than .children()
; on my system, 10x so.
So, from my perspective, there does not appear to be much reason to use the filtering mechanism of .children()
at all.
Try adding a style="width:100%;" to the img tag. That way the image will fill up the entire width of the page, thus scaling down if the image is larger than the viewport.
See https://polarssl.org/kb/cryptography/asn1-key-structures-in-der-and-pem (search the page for "BEGIN RSA PRIVATE KEY") (archive link for posterity, just in case).
BEGIN RSA PRIVATE KEY
is PKCS#1 and is just an RSA key. It is essentially just the key object from PKCS#8, but without the version or algorithm identifier in front. BEGIN PRIVATE KEY
is PKCS#8 and indicates that the key type is included in the key data itself. From the link:
The unencrypted PKCS#8 encoded data starts and ends with the tags:
-----BEGIN PRIVATE KEY----- BASE64 ENCODED DATA -----END PRIVATE KEY-----
Within the base64 encoded data the following DER structure is present:
PrivateKeyInfo ::= SEQUENCE { version Version, algorithm AlgorithmIdentifier, PrivateKey BIT STRING } AlgorithmIdentifier ::= SEQUENCE { algorithm OBJECT IDENTIFIER, parameters ANY DEFINED BY algorithm OPTIONAL }
So for an RSA private key, the OID is 1.2.840.113549.1.1.1 and there is a RSAPrivateKey as the PrivateKey key data bitstring.
As opposed to BEGIN RSA PRIVATE KEY
, which always specifies an RSA key and therefore doesn't include a key type OID. BEGIN RSA PRIVATE KEY
is PKCS#1
:
RSA Private Key file (PKCS#1)
The RSA private key PEM file is specific for RSA keys.
It starts and ends with the tags:
-----BEGIN RSA PRIVATE KEY----- BASE64 ENCODED DATA -----END RSA PRIVATE KEY-----
Within the base64 encoded data the following DER structure is present:
RSAPrivateKey ::= SEQUENCE { version Version, modulus INTEGER, -- n publicExponent INTEGER, -- e privateExponent INTEGER, -- d prime1 INTEGER, -- p prime2 INTEGER, -- q exponent1 INTEGER, -- d mod (p-1) exponent2 INTEGER, -- d mod (q-1) coefficient INTEGER, -- (inverse of q) mod p otherPrimeInfos OtherPrimeInfos OPTIONAL }
Assuming you are using Angular 6 with angular-cli and you have created a separate routing module which is responsible for routing activities - configure your routes in Routes array.Make sure that you are declaring RouterModule in exports array. Code would look like this:
@NgModule({
imports: [
RouterModule,
RouterModule.forRoot(appRoutes)
// other imports here
],
exports: [RouterModule]
})
export class AppRoutingModule { }
What you want to do is use the HTML5 attribute placeholder
which lets you set a default value for your input box:
<input type="text" name="inputBox" placeholder="enter your text here">
This should achieve what you're looking for. However, be careful because the placeholder attribute is not supported in Internet Explorer 9 and earlier versions.
I come across this error while uploading project to gitlab. I didn't clone from git but instead upload project. For pushing your code to gitlab you have two ways either using ssh or https. If you use https you have to enter username and password of gitlab account. For pushing you code to git you can use following one.
Pushing to Git for the first time
>$ cd
>$ mkdir .ssh;cd .ssh
>$ ssh-keygen -o -t rsa -b 4096 -C "[email protected]"
The -C parameter is optional, it provides a comment at the end of your key to distinguish it from others if you have multiple. This will create id_rsa (your private key) and id_rsa.pub (your public key). We pass our public key around and keep our private key — well, private. Gitlab’s User Settings is where you would then add your public key to your account, allowing us to finally push.
In your project location(Directory) use below command
git init
It Transform the current directory into a Git repository. This adds a .git subdirectory to the current directory and makes it possible to start recording revisions of the project.
Push Using https path
git push --set-upstream https://gitlab.com/Account_User_Name/Your_Project_Name.git master
Push Using ssh path
git push --set-upstream [email protected]:Account_User_Name/Your_project_Name.git master
— set-upstream: tells git the path to origin. If Git has previously pushed on your current branch, it will remember where origin is
master: this is the name of the branch I want to push to when initializing
Maybe you should take a look here: http://en.wikipedia.org/wiki/Luhn_algorithm
Here is Java snippet which validates a credit card number which should be easy enough to convert to JavaScript:
public static boolean isValidCC(String number) {
final int[][] sumTable = {{0,1,2,3,4,5,6,7,8,9},{0,2,4,6,8,1,3,5,7,9}};
int sum = 0, flip = 0;
for (int i = number.length() - 1; i >= 0; i--) {
sum += sumTable[flip++ & 0x1][Character.digit(number.charAt(i), 10)];
}
return sum % 10 == 0;
}
An error was encountered while running (Domain = LaunchServicesError, Code = 0)
Usually this indicates that installd returned an error during the install process (bad resources or similar).
Unfortunately, Xcode does not display the actual underlying error (feel free to file dupes of this known bug).
You should check ~/Library/Logs/CoreSimulator/CoreSimulator.log which will log the underlying error for you.
For this you need to update your Project Facets setting.
Project (right click) -> Properties -> Project Facets from left navigation.
If it is not open...click on the link, Check the Dynamic Web Module Check Box and select the respective version (Probably 2.4). Click on Apply Button and then Click on OK.
My Solutions:
$("body").scrollspy({ target: ".target", offset: fix_header_height });
$(".target").click(function() {
$("body").animate(
{
scrollTop: $($(this).attr("href")).offset().top - fix_header_height
},
500
);
return;
});
Preferences
> Accounts
> Add Apple ID
:You can now run your project on a device!
Doing without the -u
and -p
worked for me (when I was logged in as root):
mysqldump --opt mydbname > mydbname.sql
Why not type this is the urlbar?
javascript:alert(document.body.innerHTML)
Assuming that you have a data frame called students
, you can select individual rows or columns using the bracket syntax, like this:
students[1,2]
would select row 1 and column 2, the result here would be a single cell.students[1,]
would select all of row 1, students[,2]
would select all of column 2.If you'd like to select multiple rows or columns, use a list of values, like this:
students[c(1,3,4),]
would select rows 1, 3 and 4, students[c("stu1", "stu2"),]
would select rows named stu1
and stu2
.Hope I could help.
I think you can use db.collection.distinct(fields,query)
You will be able to get the distinct values in your case for NetworkID.
It should be something like this :
Db.collection.distinct('NetworkID')
Java supports two types of comments:
/* multiline comment */
: The compiler ignores everything from /*
to */
. The comment can span over multiple lines.
// single line
: The compiler ignores everything from //
to the end of the line.
Some tool such as javadoc use a special multiline comment for their purpose. For example /** doc comment */
is a documentation comment used by javadoc when preparing the automatically generated documentation, but for Java it's a simple multiline comment.
An update on @Scott T.'s answer: the interface between Resource Server and Authorization Server for token validation was standardized in IETF RFC 7662 in October 2015, see: https://tools.ietf.org/html/rfc7662. A sample validation call would look like:
POST /introspect HTTP/1.1
Host: server.example.com
Accept: application/json
Content-Type: application/x-www-form-urlencoded
Authorization: Bearer 23410913-abewfq.123483
token=2YotnFZFEjr1zCsicMWpAA
and a sample response:
HTTP/1.1 200 OK
Content-Type: application/json
{
"active": true,
"client_id": "l238j323ds-23ij4",
"username": "jdoe",
"scope": "read write dolphin",
"sub": "Z5O3upPC88QrAjx00dis",
"aud": "https://protected.example.net/resource",
"iss": "https://server.example.com/",
"exp": 1419356238,
"iat": 1419350238,
"extension_field": "twenty-seven"
}
Of course adoption by vendors and products will have to happen over time.
The answer is depends how you are using the objects of javascript. As already pointed loading the javascript files at footer rather than header certainly improves the performance but care should be taken that the objects which are used are initialized later than they are loaded at footer. One more way is load the 'js' files placed in folder which will be available to all the files.
npm install -g npm-install-peers
it will add all the missing peers and remove all the error
In the first two cases, you simply forgot to actually call the member function (!, it's not a value) std::vector<int>::size
like this:
#include <vector>
int main () {
std::vector<int> v;
auto size = v.size();
}
Your third call
int size = v.size();
triggers a warning, as not every return value of that function (usually a 64 bit unsigned int) can be represented as a 32 bit signed int.
int size = static_cast<int>(v.size());
would always compile cleanly and also explicitly states that your conversion from std::vector::size_type
to int
was intended.
Note that if the size of the vector
is greater than the biggest number an int
can represent, size
will contain an implementation defined (de facto garbage) value.
Python's built-in float
type has double precision (it's a C double
in CPython, a Java double
in Jython). If you need more precision, get NumPy and use its numpy.float128
.
The flowchart below can be of help when choosing one of the various semantic HTML5 elements:
If you have an array of a some kind of object (bean) you can do this:
List<aBean> gasList = createDuplicateGasBeans();
Set<aBean> uniqueGas = new HashSet<aBean>(gasList);
like said Mathias Schwarz above, but you have to provide your aBean with the methods hashCode()
and equals(Object obj)
that can be done easily in Eclipse by dedicated menu 'Generate hashCode() and equals()
' (while in the bean Class).
Set will evaluate the overridden methods to discriminate equals objects.
You can do lots of stupid thing with javascript. I will leave this quote here from YDKJS book.
Mentioned page of the book ->
It means not equal to .
It's the same as != in C-like languages. but <> is ISO Standard and
!= Not equal to (not ISO standard)
I will do it as
git format-patch branch_old..branch_new file
this will produce a patch for the file.
Apply patch at target branch_old
git am blahblah.patch
Modern answer: Use LocalDate
from java.time
, the modern Java date and time API, and its toString
method:
LocalDate date = LocalDate.of(2012, Month.DECEMBER, 1); // get from somewhere
String formattedDate = date.toString();
System.out.println(formattedDate);
This prints
2012-12-01
A date (whether we’re talking java.util.Date
or java.time.LocalDate
) doesn’t have a format in it. All it’s got is a toString
method that produces some format, and you cannot change the toString
method. Fortunately, LocalDate.toString
produces exactly the format you asked for.
The Date
class is long outdated, and the SimpleDateFormat
class that you tried to use, is notoriously troublesome. I recommend you forget about those classes and use java.time
instead. The modern API is so much nicer to work with.
Except: it happens that you get a Date
from a legacy API that you cannot change or don’t want to change just now. The best thing you can do with it is convert it to java.time.Instant
and do any further operations from there:
Date oldfashoinedDate = // get from somewhere
LocalDate date = oldfashoinedDate.toInstant()
.atZone(ZoneId.of("Asia/Beirut"))
.toLocalDate();
Please substitute your desired time zone if it didn’t happen to be Asia/Beirut. Then proceed as above.
Link: Oracle tutorial: Date Time, explaining how to use java.time
.
Try this in your code:
import Foo from './Foo';
import Bar from './Bar';
// without default
export {
Foo,
Bar,
}
Btw, you can also do it this way:
// bundle.js
export { default as Foo } from './Foo'
export { default as Bar } from './Bar'
export { default } from './Baz'
// and import somewhere..
import Baz, { Foo, Bar } from './bundle'
Using export
export const MyFunction = () => {}
export const MyFunction2 = () => {}
const Var = 1;
const Var2 = 2;
export {
Var,
Var2,
}
// Then import it this way
import {
MyFunction,
MyFunction2,
Var,
Var2,
} from './foo-bar-baz';
The difference with export default
is that you can export something, and apply the name where you import it:
// export default
export default class UserClass {
constructor() {}
};
// import it
import User from './user'
Use range
. In Python 2.x it returns a list so all you need is:
>>> range(11, 17)
[11, 12, 13, 14, 15, 16]
In Python 3.x range
is a iterator. So, you need to convert it to a list:
>>> list(range(11, 17))
[11, 12, 13, 14, 15, 16]
Note: The second number is exclusive. So, here it needs to be 16+1
= 17
EDIT:
To respond to the question about incrementing by 0.5
, the easiest option would probably be to use numpy's arange()
and .tolist()
:
>>> import numpy as np
>>> np.arange(11, 17, 0.5).tolist()
[11.0, 11.5, 12.0, 12.5, 13.0, 13.5,
14.0, 14.5, 15.0, 15.5, 16.0, 16.5]
The first solution is to use the java.util.Random
class:
import java.util.Random;
Random rand = new Random();
// Obtain a number between [0 - 49].
int n = rand.nextInt(50);
// Add 1 to the result to get a number from the required range
// (i.e., [1 - 50]).
n += 1;
Another solution is using Math.random()
:
double random = Math.random() * 49 + 1;
or
int random = (int)(Math.random() * 50 + 1);
Extension to @Stevoisiak's answer and dealing with non-Latin characters. Only one way will display the non-Latin characters to you. The one method is different on both Python 3 and Python 2.
Input
xml = ElementTree.fromstring('<Person Name="???" />')
xml = ElementTree.Element("Person", Name="???") # Read Note about Python 2
NOTE: In Python 2, when calling the
toString(...)
code, assigningxml
withElementTree.Element("Person", Name="???")
will raise an error...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xed in position 0: ordinal not in range(128)
Output
ElementTree.tostring(xml)
# Python 3 (???): b'<Person Name="크리스" />'
# Python 3 (John): b'<Person Name="John" />'
# Python 2 (???): <Person Name="크리스" />
# Python 2 (John): <Person Name="John" />
ElementTree.tostring(xml, encoding='unicode')
# Python 3 (???): <Person Name="???" /> <-------- Python 3
# Python 3 (John): <Person Name="John" />
# Python 2 (???): LookupError: unknown encoding: unicode
# Python 2 (John): LookupError: unknown encoding: unicode
ElementTree.tostring(xml, encoding='utf-8')
# Python 3 (???): b'<Person Name="\xed\x81\xac\xeb\xa6\xac\xec\x8a\xa4" />'
# Python 3 (John): b'<Person Name="John" />'
# Python 2 (???): <Person Name="???" /> <-------- Python 2
# Python 2 (John): <Person Name="John" />
ElementTree.tostring(xml).decode()
# Python 3 (???): <Person Name="크리스" />
# Python 3 (John): <Person Name="John" />
# Python 2 (???): <Person Name="크리스" />
# Python 2 (John): <Person Name="John" />
There is a JDK dropdown in "job name" -> Configure in Jenkins web ui. It will list all JDKs available in Jenkins configuration.
Similarly using Bash regexp. Shall be able to snatch any key/value pair.
key="Body"
re="\"($key)\": \"([^\"]*)\""
while read -r l; do
if [[ $l =~ $re ]]; then
name="${BASH_REMATCH[1]}"
value="${BASH_REMATCH[2]}"
echo "$name=$value"
else
echo "No match"
fi
done
Regular expression can be tuned to match multiple spaces/tabs or newline(s). Wouldn't work if value has embedded "
. This is an illustration. Better to use some "industrial" parser :)
Usually you can double click the .py
file in Windows explorer to run it. If this doesn't work, you can create a batch file in the same directory with the following contents:
C:\python23\python YOURSCRIPTNAME.py
Then double click that batch file. Or, you can simply run that line in the command prompt while your working directory is the location of your script.
use document.write for example,
<script>
document.write(' <?php add(1,2); ?> ');
document.write(' <?php milt(1,2); ?> ');
document.write(' <?php divide(1,2); ?> ');
</script>
I have made a variant solution based on paxdiablo's post
Place the following code in Waitlink.cmd
@setlocal enableextensions enabledelayedexpansion
@echo off
set ipaddr=%1
:loop
set state=up
ping -n 1 !ipaddr! >nul: 2>nul:
if not !errorlevel!==0 set state=down
echo.Link is !state!
if "!state!"=="up" (
goto :endloop
)
ping -n 6 127.0.0.1 >nul: 2>nul:
goto :loop
:endloop
endlocal
For example use it from another batch file like this
call Waitlink someurl.com
net use o: \\someurl.com\myshare
The call to waitlink will only return when a ping was succesful. Thanks to paxdiablo and Gabe. Hope this helps someone else.
To expound on Stephane's answer.
I got this error when I tried to grant remote connections privileges of a particular database to a root
user on MySQL server by running the command:
USE database_name;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';
This gave an error:
ERROR 1133 (42000): Can't find any matching row in the user table
Here's how I fixed it:
First, confirm that your MySQL server allows for remote connections. Use your preferred text editor to open the MySQL server configuration file:
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
Scroll down to the bind-address line and ensure that is either commented out or replaced with 0.0.0.0
(to allow all remote connections) or replaced with Ip-Addresses that you want remote connections from.
Once you make the necessary changes, save and exit the configuration file. Apply the changes made to the MySQL config file by restarting the MySQL service:
sudo systemctl restart mysql
Next, log into the MySQL server console on the server it was installed:
mysql -u root -p
Enter your mysql user password
Check the hosts that the user you want has access to already. In my case the user is root
:
SELECT host FROM mysql.user WHERE user = "root";
This gave me this output:
+-----------+
| host |
+-----------+
| localhost |
+-----------+
Next, I ran the command below which is similar to the previous one that was throwing errors, but notice that I added a password to it this time:
USE database_name;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'my-password';
Note: %
grants a user remote access from all hosts on a network. You can specify the Ip-Address of the individual hosts that you want to grant the user access from using the command - GRANT ALL PRIVILEGES ON *.* TO 'root'@'Ip-Address' IDENTIFIED BY 'my-password';
Afterwhich I checked the hosts that the user now has access to. In my case the user is root
:
SELECT host FROM mysql.user WHERE user = "root";
This gave me this output:
+-----------+
| host |
+-----------+
| % |
| localhost |
+-----------+
Finally, you can try connecting to the MySQL server from another server using the command:
mysql -u username -h mysql-server-ip-address -p
Where u represents user, h represents mysql-server-ip-address and p represents password. So in my case it was:
mysql -u root -h 34.69.261.158 -p
Enter your mysql user password
You should get this output depending on your MySQL server version:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.31 MySQL Community Server (GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
Resources: How to Allow Remote Connections to MySQL
That's all.
I hope this helps
its anything other than the data itself, ie tcp flags, headers, crc, fcs etc..
This might help
let allElements = Array.from(document.querySelectorAll('.widget.hover'))
for (let element of allElements) {
element.classList.remove('hover')
}
Reference types do not store the object directly into the variable to which it is assigned, so the object variable in the example below, doesn’t actually contain the object instance. Instead, it holds a pointer (or reference) to the location in memory, where the object exists.
var object = new Object();
if you assign one reference typed variable to another, each variable gets a copy of the pointer, and both still reference to the same object in memory.
var object1 = new Object();
var object2 = object1;
JavaScript is a garbage-collected language, so you don’t really need to worry about memory allocations when you use reference types. However, it’s best to dereference objects that you no longer need so that the garbage collector can free up that memory. The best way to do this is to set the object variable to null.
var object1 = new Object();
// do something
object1 = null; // dereference
Dereferencing objects is especially important in very large applications that use millions of objects.
from The Principles of Object-Oriented JavaScript - NICHOLAS C. ZAKAS
Simple source will help you. For Ex.
#!/bin/bash
echo "My shell_1"
source my_script1.sh
echo "Back in shell_1"
Go to your Postgresql Config and Edit pg_hba.conf
sudo vim /etc/postgresql/9.3/main/pg_hba.conf
Then Change this Line :
Database administrative login by Unix domain socket
local all postgres md5
to :
Database administrative login by Unix domain socket
local all postgres peer
then Restart the PostgreSQL service via SUDO command then
psql -U postgres
You will be now entered and will See the Postgresql terminal
then enter
\password
and enter the NEW Password for Postgres default user, After Successfully changing the Password again go to the pg_hba.conf and revert the change to "md5"
now you will be logged in as
psql -U postgres
with your new Password.
Let me know if you all find any issue in it.
There is something called Rule of Thumb. It says that the number of clusters can be calculated by
k = (n/2)^0.5
where n is the total number of elements from your sample. You can check the veracity of this information on the following paper:
http://www.ijarcsms.com/docs/paper/volume1/issue6/V1I6-0015.pdf
There is also another method called G-means, where your distribution follows a Gaussian Distribution or Normal Distribution. It consists of increasing k until all your k groups follow a Gaussian Distribution. It requires a lot of statistics but can be done. Here is the source:
http://papers.nips.cc/paper/2526-learning-the-k-in-k-means.pdf
I hope this helps!
Based on a link to Apache HTTP Components on this SO thread, I came across the Fluent facade API for HTTP Components. An example there shows how to set up a queue of asynchronous HTTP requests (and get notified of their completion/failure/cancellation). In my case, I didn't need a queue, just one async request at a time.
Here's where I ended up (also using URIBuilder from HTTP Components, example here).
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.apache.http.client.fluent.Async;
import org.apache.http.client.fluent.Content;
import org.apache.http.client.fluent.Request;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.concurrent.FutureCallback;
//...
URIBuilder builder = new URIBuilder();
builder.setScheme("http").setHost("myhost.com").setPath("/folder")
.setParameter("query0", "val0")
.setParameter("query1", "val1")
...;
URI requestURL = null;
try {
requestURL = builder.build();
} catch (URISyntaxException use) {}
ExecutorService threadpool = Executors.newFixedThreadPool(2);
Async async = Async.newInstance().use(threadpool);
final Request request = Request.Get(requestURL);
Future<Content> future = async.execute(request, new FutureCallback<Content>() {
public void failed (final Exception e) {
System.out.println(e.getMessage() +": "+ request);
}
public void completed (final Content content) {
System.out.println("Request completed: "+ request);
System.out.println("Response:\n"+ content.asString());
}
public void cancelled () {}
});
This just in:
n = 8
s = '123'
print s[:n-3] + (s[n-3:], '...')[len(s) > n]
s = '12345678'
print s[:n-3] + (s[n-3:], '...')[len(s) > n]
s = '123456789'
print s[:n-3] + (s[n-3:], '...')[len(s) > n]
s = '123456789012345'
print s[:n-3] + (s[n-3:], '...')[len(s) > n]
123
12345678
12345...
12345...
try this method
public void centerTextView(LinearLayout linearLayout) {
TextView textView = new TextView(context);
textView.setText(context.getString(R.string.no_records));
textView.setTypeface(Typeface.DEFAULT_BOLD);
textView.setGravity(Gravity.CENTER);
textView.setTextSize(18.0f);
textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
linearLayout.addView(textView);
}
I got this message when updating new files from remote and index got out of whack. Tried to fix the index, but resolving via Xcode 4.5, GitHub.app (103), and GitX.app (0.7.1) failed. So, I did this:
git commit -a -m "your commit message here"
which worked in bypassing the git index.
Two blog posts that helped me understand about Git and Xcode are:
So, not directly related but this is the first question that appears when you try to find how to terminate a process running from a specific folder using Python.
It also answers the question in a way(even though it is an old one with lots of answers).
While creating a faster way to scrape some government sites for data I had an issue where if any of the processes in the pool got stuck they would be skipped but still take up memory from my computer. This is the solution I reached for killing them, if anyone knows a better way to do it please let me know!
import pandas as pd
import wmi
from re import escape
import os
def kill_process(kill_path, execs):
f = wmi.WMI()
esc = escape(kill_path)
temp = {'id':[], 'path':[], 'name':[]}
for process in f.Win32_Process():
temp['id'].append(process.ProcessId)
temp['path'].append(process.ExecutablePath)
temp['name'].append(process.Name)
temp = pd.DataFrame(temp)
temp = temp.dropna(subset=['path']).reset_index().drop(columns=['index'])
temp = temp.loc[temp['path'].str.contains(esc)].loc[temp.name.isin(execs)].reset_index().drop(columns=['index'])
[os.system('taskkill /PID {} /f'.format(t)) for t in temp['id']]
I found the answer, For those who are looking for the same thing here is how I did it. You should not consider uploading images to the database instead you can store the name of the uploaded file in your database and then retrieve the file name and use it where ever you want to display the image.
HTML CODE
<input type="file" name="imageUpload" id="imageUpload">
PHP CODE
if(isset($_POST['submit'])) {
//Process the image that is uploaded by the user
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["imageUpload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
if (move_uploaded_file($_FILES["imageUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["imageUpload"]["name"]). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
$image=basename( $_FILES["imageUpload"]["name"],".jpg"); // used to store the filename in a variable
//storind the data in your database
$query= "INSERT INTO items VALUES ('$id','$title','$description','$price','$value','$contact','$image')";
mysql_query($query);
require('heading.php');
echo "Your add has been submited, you will be redirected to your account page in 3 seconds....";
header( "Refresh:3; url=account.php", true, 303);
}
CODE TO DISPLAY THE IMAGE
while($row = mysql_fetch_row($result)) {
echo "<tr>";
echo "<td><img src='uploads/$row[6].jpg' height='150px' width='300px'></td>";
echo "</tr>\n";
}
This is probably a configuration error. If you insist on using PHP mail
function, you will have to edit php.ini
.
If you are looking for an easier and more versatile option (in my opinion), you should use PHPMailer.
You can do this:
<div class"my_class">
<?php if ($cart->count_product > 0) {
print $cart->count_product;
} else {
print '';
}
?>
</div>
Before hitting the div
, we are not in PHP tags
This is an old question, but is still regularly viewed/needed. I want to post to caution readers like me that whitespace as mentioned in the OP's question is not the same as Regex's definition, to include newlines, tabs, and space characters -- Git asks you to be explicit. See some options here: https://git-scm.com/book/en/v2/Customizing-Git-Git-Configuration
As stated, git diff -b
or git diff --ignore-space-change
will ignore spaces at line ends. If you desire that setting to be your default behavior, the following line adds that intent to your .gitconfig file, so it will always ignore the space at line ends:
git config --global core.whitespace trailing-space
In my case, I found this question because I was interested in ignoring "carriage return whitespace differences", so I needed this:
git diff --ignore-cr-at-eol
or
git config --global core.whitespace cr-at-eol
from here.
You can also make it the default only for that repo by omitting the --global parameter, and checking in the settings file for that repo. For the CR problem I faced, it goes away after check-in if warncrlf or autocrlf = true in the [core] section of the .gitconfig file.
Try using Sublime Package Control to install your packages.
Also take a look at these tips
There are some webkit css properties that should work on Chrome/Safari at least:
-webkit-text-stroke-width: 2px;
-webkit-text-stroke-color: black;
That's a 2px wide black text outline.
array_shift
the only parameter is an array passed by reference. The return value of explode(".", $value)
does not have any reference. Hence the error.
You should store the return value to a variable first.
$arr = explode(".", $value);
$extension = strtolower(array_pop($arr));
$fileName = array_shift($arr);
From PHP.net
The following things can be passed by reference:
- Variables, i.e. foo($a)
- New statements, i.e. foo(new foobar())
- [References returned from functions][2]
No other expressions should be passed by reference, as the result is undefined. For example, the following examples of passing by reference are invalid:
Remember set sendfile off;
or cache headers doesn't work.
I use this snipped:
location / {
index index.php index.html index.htm;
try_files $uri $uri/ =404; #.s. el /index.html para html5Mode de angular
#.s. kill cache. use in dev
sendfile off;
add_header Last-Modified $date_gmt;
add_header Cache-Control 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';
if_modified_since off;
expires off;
etag off;
proxy_no_cache 1;
proxy_cache_bypass 1;
}
Either attribute can be applied to View's (visual control) horizontal or vertical size. It's used to set a View or Layouts size based on either it's contents or the size of it's parent layout rather than explicitly specifying a dimension.
fill_parent
(deprecated and renamed MATCH_PARENT
in API Level 8 and higher)
Setting the layout of a widget to fill_parent will force it to expand to take up as much space as is available within the layout element it's been placed in. It's roughly equivalent of setting the dockstyle of a Windows Form Control to Fill
.
Setting a top level layout or control to fill_parent will force it to take up the whole screen.
wrap_content
Setting a View's size to wrap_content will force it to expand only far enough to contain the values (or child controls) it contains. For controls -- like text boxes (TextView) or images (ImageView) -- this will wrap the text or image being shown. For layout elements it will resize the layout to fit the controls / layouts added as its children.
It's roughly the equivalent of setting a Windows Form Control's Autosize
property to True.
Online Documentation
There's some details in the Android code documentation here.
For me this was a case that the Script path wouldn't load - I had incorrectly linked it. Check your script files - even if no path error is reported - actually load.
Do you have the line
apply plugin: 'com.google.gms.google-services'
line at the bottom of your app's build.gradle file?
I saw some errors when it was on the top and as it's written here, it should be at the bottom.
Some of the other answers are useless because as soon as you re-import the IntelliJ IDEA project from the maven project, all changes will be lost.
The building of the jar needs to be triggered by a run/debug configuration, not by the project settings.
Jetbrains has a nice description of how you can accomplish this here:
https://www.jetbrains.com/help/idea/maven.html
Scroll down to the section called "Configuring triggers for Maven goals".
(The only disadvantage of their description is that their screenshots are in the default black-on-white color scheme instead of the super-awesome darcula theme. Ugh!)
So, basically, what you do is that you open the "Maven Projects" panel, you find the project of interest, (in your case, the project that builds your jar,) underneath it you find the maven goal that you want to execute, (usually the "package" goal creates jars,) you open up the context menu on it, (right-click on a Windows machine,) and there will be an "Execute before Run/Debug..." option that you can select and it will take you by the hand from there. Really easy.
this is Extension to @Félix Brunet answer
Reason - there is code hidden in your app
How to find -
Eg - In my case i created 30 instances of winston log Unknowingly and it started giving error
Note : if u supress this error , it will come again afetr 3..4 days
I found the solution on this page: https://github.com/MrRio/jsPDF/issues/434 From the user: wangzhixuan
I copy the solution here: // suppose your picture is already in a canvas
var imgData = canvas.toDataURL('image/png');
/*
Here are the numbers (paper width and height) that I found to work.
It still creates a little overlap part between the pages, but good enough for me.
if you can find an official number from jsPDF, use them.
*/
var imgWidth = 210;
var pageHeight = 295;
var imgHeight = canvas.height * imgWidth / canvas.width;
var heightLeft = imgHeight;
var doc = new jsPDF('p', 'mm');
var position = 0;
doc.addImage(imgData, 'PNG', 0, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
while (heightLeft >= 0) {
position = heightLeft - imgHeight;
doc.addPage();
doc.addImage(imgData, 'PNG', 0, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
}
doc.save( 'file.pdf');?
If you need to check which control caused the postback, then you could just directly compare ["__EVENTTARGET"]
to the control you are interested in:
if (specialControl.UniqueID == Page.Request.Params["__EVENTTARGET"])
{
/*do special stuff*/
}
This assumes you're just going to be comparing the result from any GetPostBackControl(...)
extension method anyway. It may not handle EVERY situation, but if it works it is simpler. Plus, you won't scour the page looking for a control you didn't care about to begin with.
for rational numbers use this one: (([0-9]+.[0-9]*)|([0-9]*.[0-9]+)|([0-9]+))
function sendAjaxRequest(element,urlToSend) {
var clickedButton = element;
$.ajax({type: "POST",
url: urlToSend,
data: { id: clickedButton.val(), access_token: $("#access_token").val() },
success:function(result){
alert('ok');
},
error:function(result)
{
alert('error');
}
});
}
$(document).ready(function(){
$("#button_1").click(function(e){
e.preventDefault();
sendAjaxRequest($(this),'/pages/test/');
});
$("#button_2").click(function(e){
e.preventDefault();
sendAjaxRequest($(this),'/pages/test/');
});
});
I know that this question is old but I think my answer would help those who haven't found solution in other answers. So, my problem was that I couldn't display croatian characters in my PDF. Firstly, I used FPDF but, I think, it does not support Unicode. Finally, what solved my problem is tFPDF which is the version of FPDF that supports Unicode. This is the example that worked for me:
require('tFPDF/tfpdf.php');
$pdf = new tFPDF();
$pdf->AddPage();
$pdf->AddFont('DejaVu','','DejaVuSansCondensed.ttf',true);
$pdf->AddFont('DejaVu', 'B', 'DejaVuSansCondensed-Bold.ttf', true);
$pdf->SetFont('DejaVu','',14);
$txt = 'ccžšdCCŽŠÐ';
$pdf->Write(8,$txt);
$pdf->Output();
There is no syntax for block quote in VBA. The work around is to use the button to quickly block or unblock multiple lines of code.
If it were an "ordered factor" things would be different. Which is not to say I like "ordered factors", I don't, only to say that some relationships are defined for 'ordered factors' that are not defined for "factors". Factors are thought of as ordinary categorical variables. You are seeing the natural sort order of factors which is alphabetical lexical order for your locale. If you want to get an automatic coercion to "numeric" for every column, ... dates and factors and all, then try:
sapply(df, function(x) max(as.numeric(x)) ) # not generally a useful result
Or if you want to test for factors first and return as you expect then:
sapply( df, function(x) if("factor" %in% class(x) ) {
max(as.numeric(as.character(x)))
} else { max(x) } )
@Darrens comment does work better:
sapply(df, function(x) max(as.character(x)) )
max
does succeed with character vectors.
It should be
if (*message == '\0')
In C, simple quotes delimit a single character whereas double quotes are for strings.
Check your enviroment:
echo $http_proxy
echo $https_proxy
echo $HTTPS_PROXY
echo $HTTP_PROXY
and delete with export http_proxy=
Or check https and http proxy
git config --global --unset https.proxy
git config --global --unset http.proxy
Or do you have the proxy in the local config?
git config --unset http.proxy
git config --unset https.proxy
If you are on a system that has Gnome keyring app a solution that avoids exposing the password directly is to use gkeyring.py to extract the password from the keyring:
server=server.example.com
file=path/to/my/file
user=my_user_name
pass=$(gkeyring.py -k login -tnetwork -p user=$user,server=$server -1)
curl -u $user:$pass ftps://$server/$file -O
The following also worked for me. ISO 8859-1 is going to save a lot, hahaha - mainly if using Speech Recognition APIs.
Example:
file = open('../Resources/' + filename, 'r', encoding="ISO-8859-1");
I had this problem when moving my project from one computer to another. The solution was to reload selenium webdriver from nuget.
Take a look at WordUtils in the Apache Commons lang library:
Specifically, the capitalizeFully(String str, char[] delimiters) method should do the job:
String blah = "LORD_OF_THE_RINGS";
assertEquals("LordOfTheRings", WordUtils.capitalizeFully(blah, new char[]{'_'}).replaceAll("_", ""));
Green bar!
Well, you can always try WHERE textcolumn LIKE "%SUBSTRING%"
- but this is guaranteed to be pretty slow, as your query can't do an index match because you are looking for characters on the left side.
It depends on the field type - a textarea usually won't be saved as VARCHAR, but rather as (a kind of) TEXT field, so you can use the MATCH AGAINST operator.
To get the columns that don't match, simply put a NOT in front of the like: WHERE textcolumn NOT LIKE "%SUBSTRING%"
.
Whether the search is case-sensitive or not depends on how you stock the data, especially what COLLATION you use. By default, the search will be case-insensitive.
I say that doing a WHERE field LIKE "%value%"
is slower than WHERE field LIKE "value%"
if the column field has an index, but this is still considerably faster than getting all values and having your application filter. Both scenario's:
1/ If you do SELECT field FROM table WHERE field LIKE "%value%"
, MySQL will scan the entire table, and only send the fields containing "value".
2/ If you do SELECT field FROM table
and then have your application (in your case PHP) filter only the rows with "value" in it, MySQL will also scan the entire table, but send all the fields to PHP, which then has to do additional work. This is much slower than case #1.
Solution: Please do use the WHERE
clause, and use EXPLAIN
to see the performance.
So I assume you want to highlight some points that fit a certain criteria. You can use Prelude's command to do a second scatter plot of the hightlighted points with an empty circle and a first call to plot all the points. Make sure the s paramter is sufficiently small for the larger empty circles to enclose the smaller filled ones.
The other option is to not use scatter and draw the patches individually using the circle/ellipse command. These are in matplotlib.patches, here is some sample code on how to draw circles rectangles etc.
GLM has good example of rotation : http://glm.g-truc.net/code.html
glm::mat4 Projection = glm::perspective(45.0f, 4.0f / 3.0f, 0.1f, 100.f);
glm::mat4 ViewTranslate = glm::translate(
glm::mat4(1.0f),
glm::vec3(0.0f, 0.0f, -Translate)
);
glm::mat4 ViewRotateX = glm::rotate(
ViewTranslate,
Rotate.y,
glm::vec3(-1.0f, 0.0f, 0.0f)
);
glm::mat4 View = glm::rotate(
ViewRotateX,
Rotate.x,
glm::vec3(0.0f, 1.0f, 0.0f)
);
glm::mat4 Model = glm::scale(
glm::mat4(1.0f),
glm::vec3(0.5f)
);
glm::mat4 MVP = Projection * View * Model;
glUniformMatrix4fv(LocationMVP, 1, GL_FALSE, glm::value_ptr(MVP));
The config file for scripts and programs is ~/.bashrc
and the config file that gets loaded when you use Terminal is ~/.bash_login
.
I think the best way is to just have everything in ~/.bashrc
.
For your specific question just enter (this will overwrite any existing ~/.bashrc):
echo "alias blah=\"/usr/bin/blah\"" >>~/.bashrc
into the Terminal and a ~/.bashrc
file will be created with your new alises. After that just edit the file to add new aliases, functions, settings etc.
Seconds with 2 decimal spaces:
Dim startTime As Single 'start timer
MsgBox ("run time: " & Format((Timer - startTime) / 1000000, "#,##0.00") & " seconds") 'end timer
Milliseconds:
Dim startTime As Single 'start timer
MsgBox ("run time: " & Format((Timer - startTime), "#,##0.00") & " milliseconds") 'end timer
Milliseconds with comma seperator:
Dim startTime As Single 'start timer
MsgBox ("run time: " & Format((Timer - startTime) * 1000, "#,##0.00") & " milliseconds") 'end timer
Just leaving this here for anyone that was looking for a simple timer formatted with seconds to 2 decimal spaces like I was. These are short and sweet little timers I like to use. They only take up one line of code at the beginning of the sub or function and one line of code again at the end. These aren't meant to be crazy accurate, I generally don't care about anything less then 1/100th of a second personally, but the milliseconds timer will give you the most accurate run time of these 3. I've also read you can get the incorrect read out if it happens to run while crossing over midnight, a rare instance but just FYI.
There are mainly three types of JOIN
Outer: are of three types
Cross Join: joins everything to everything
Testing ErrorLevel
works for console applications, but as hinted at by dmihailescu, this won't work if you're trying to run a windowed application (e.g. Win32-based) from a command prompt. A windowed application will run in the background, and control will return immediately to the command prompt (most likely with an ErrorLevel
of zero to indicate that the process was created successfully). When a windowed application eventually exits, its exit status is lost.
Instead of using the console-based C++ launcher mentioned elsewhere, though, a simpler alternative is to start a windowed application using the command prompt's START /WAIT
command. This will start the windowed application, wait for it to exit, and then return control to the command prompt with the exit status of the process set in ErrorLevel
.
start /wait something.exe
echo %errorlevel%
Give them a trivial pom with these jars listed as dependencies and instructions to run:
mvn dependency:go-offline
This will pull the dependencies to the local repo.
A more direct solution is dependency:get, but it's a lot of arguments to type:
mvn dependency:get -DrepoUrl=something -Dartifact=group:artifact:version
My personal preference is to use grep and the while command. This allows one to write powerful yet readable scripts ensuring that you end up doing exactly what you want. Plus by using an echo command you can perform a dry run before carrying out the actual operation. For example:
ls | grep -v "Music" | while read filename
do
echo $filename
done
will print out the files that you will end up copying. If the list is correct the next step is to simply replace the echo command with the copy command as follows:
ls | grep -v "Music" | while read filename
do
cp "$filename" /target_directory
done
This is also known as the "inline if", or as above the ternary operator. https://en.wikipedia.org/wiki/%3F:
It's used to reduce code, though it's not recommended to use a lot of these on a single line as it may make maintaining code quite difficult. Imagine:
a = b?c:(d?e:(f?g:h));
and you could go on a while.
It ends up basically the same as writing:
if(b)
a = c;
else if(d)
a = e;
else if(f)
a = g;
else
a = h;
In your case, "string requestUri = _apiURL + "?e=" + OperationURL[0] + ((OperationURL[1] == "GET") ? GetRequestSignature() : "");"
Can also be written as: (omitting the else, since it's an empty string)
string requestUri = _apiURL + "?e=" + OperationURL[0];
if((OperationURL[1] == "GET")
requestUri = requestUri + GetRequestSignature();
or like this:
string requestUri;
if((OperationURL[1] == "GET")
requestUri = _apiURL + "?e=" + OperationURL[0] + GetRequestSignature();
else
requestUri = _apiURL + "?e=" + OperationURL[0];
Depending on your preference / the code style your boss tells you to use.
Sometimes the value needs to be trimmed of whitespace or it won't be matched, in such case this additional step can be used (source):
if(((DropDownList) myControl1).Items.Cast<ListItem>().Select(i => i.Value.Trim() == ctrl.value.Trim()).FirstOrDefault() != null){}
Just set the view as null that will close the AlertDialog simple.
Using
.getActivity()
solves this issue:
For eg.
Intent i= new Intent(MainActivity.this.getActivity(), Next.class);
startActivity(i);
Hope this helps.
Cheers.
also, you can fetch all data and count in the blade file. for example:
your code in the controller
$posts = Post::all();
return view('post', compact('posts'));
your code in the blade file.
{{ $posts->count() }}
finally, you can see the total of your posts.
Its working for me
.line{_x000D_
width: 112px;_x000D_
height: 47px;_x000D_
border-bottom: 1px solid black;_x000D_
position: absolute;_x000D_
}
_x000D_
<div class="line"></div>
_x000D_
The second way is a tad more efficient, but a much better way is to execute them in batches:
public void executeBatch(List<Entity> entities) throws SQLException {
try (
Connection connection = dataSource.getConnection();
PreparedStatement statement = connection.prepareStatement(SQL);
) {
for (Entity entity : entities) {
statement.setObject(1, entity.getSomeProperty());
// ...
statement.addBatch();
}
statement.executeBatch();
}
}
You're however dependent on the JDBC driver implementation how many batches you could execute at once. You may for example want to execute them every 1000 batches:
public void executeBatch(List<Entity> entities) throws SQLException {
try (
Connection connection = dataSource.getConnection();
PreparedStatement statement = connection.prepareStatement(SQL);
) {
int i = 0;
for (Entity entity : entities) {
statement.setObject(1, entity.getSomeProperty());
// ...
statement.addBatch();
i++;
if (i % 1000 == 0 || i == entities.size()) {
statement.executeBatch(); // Execute every 1000 items.
}
}
}
}
As to the multithreaded environments, you don't need to worry about this if you acquire and close the connection and the statement in the shortest possible scope inside the same method block according the normal JDBC idiom using try-with-resources statement as shown in above snippets.
If those batches are transactional, then you'd like to turn off autocommit of the connection and only commit the transaction when all batches are finished. Otherwise it may result in a dirty database when the first bunch of batches succeeded and the later not.
public void executeBatch(List<Entity> entities) throws SQLException {
try (Connection connection = dataSource.getConnection()) {
connection.setAutoCommit(false);
try (PreparedStatement statement = connection.prepareStatement(SQL)) {
// ...
try {
connection.commit();
} catch (SQLException e) {
connection.rollback();
throw e;
}
}
}
}
openFileInput()
doesn't accept paths, only a file name
if you want to access a path, use File file = new File(path)
and corresponding FileInputStream
a csv-file is just like any other file a stream of characters. the getline reads from the file up to a delimiter however in your case the delimiter for the last item is not ' ' as you assume
getline(file, genero, ' ') ;
it is newline \n
so change that line to
getline(file, genero); // \n is default delimiter
In the case of a vector and list, the main differences that stick out to me are the following:
vector
A vector stores its elements in contiguous memory. Therefore, random access is possible inside a vector which means that accessing an element of a vector is very fast because we can simply multiply the base address with the item index to access that element. In fact, it takes only O(1) or constant time for this purpose.
Since a vector basically wraps an array, every time you insert an element into the vector (dynamic array), it has to resize itself by finding a new contiguous block of memory to accommodate the new elements which is time-costly.
It does not consume extra memory to store any pointers to other elements within it.
list
A list stores its elements in non-contiguous memory. Therefore, random access is not possible inside a list which means that to access its elements we have to use the pointers and traverse the list which is slower relative to vector. This takes O(n) or linear time which is slower than O(1).
Since a list uses non-contiguous memory, the time taken to insert an element inside a list is a lot more efficient than in the case of its vector counterpart because reallocation of memory is avoided.
It consumes extra memory to store pointers to the element before and after a particular element.
So, keeping these differences in mind, we usually consider memory, frequent random access and insertion to decide the winner of vector vs list in a given scenario.